Department Optics for Solar Energy

Publications and Patents

• 2025
• 2024
• 2023
• 2022
• 2021
• 2020
• 2019
• 2018
• 2017
• 2016
• 2015
• 2014
• 2013
• 2012
• 2007-2011
• Patents

2025

• 
  Jäger, K.; Aeberhard, U.; Alarcon Llado, E.; Bläsi, B.; Burger, S.; Ehrler, B.; Favre, W.; Fejfar, A.; Gageot, T.; Gordon, I.; Helmers, H.; Höhn, O.; Isabella, O.; Jost, M.; Ledinský, M.; Mandal, J.; Manley, P.; Muñoz, D.; Omair, Z.; Ortiz Lizcano, J.C.; Paetzold, U.W.; Raman, A.P.; Sai, H.; Saive, R.; Schmid, M.; Yablonovitch, E.; Becker, C.: Optics for terawatt-scale photovoltaics: review and perspectives. Advances in Optics and Photonics 17 (2025), p. 185-294
  doi: 10.1364/AOP.530556
  Open Access (available 01.03.2026)
• 
  Jäger, K.; Tejada, A.; Berwig, S.; Hammerschmidt, M.; Tockhorn, P.; Albrecht, S.; Becker, C.: Optical Simulations of Nanotextured All-Perovskite Tandem Solar Cells. Advanced Theory and Simulations 8 (2025), p. 2400724/1-9
  doi: 10.1002/adts.202400724
  Open Access
• 
  Rieckhoff, S.; Riesebeck, F.; Soldera, M.; Mayer-Stillrich, K.; Wang, Q.; Ruske, F.; Lasagni, A.F.; Becker, C.: Texture-Enhanced Mechanical Stability of Transparent Electrodes for Flexible Optoelectronics with Near-Infrared Response. Advanced Materials Interfaces early view (2025), p. 2400922
  doi: 10.1002/admi.202400922
• 
  Schaible, J.; Winarto, H.; Skorjanc, V.; Yoo, D.; Zimmermann, L.; Jäger, K.; Sekulic, I.; Schneider, P.-I.; Burger, S.; Wessels, A.; Bläsi, B.; Becker, C.: Optimizing Aesthetic Appearance of Perovskite Solar Cells Using Color Filters. Solar RRL early view (2025), p. 2400627
  doi: 10.1002/solr.202400627

2024

• 
  Ernst, M.; Asselineau, C.-A.; Tillmann, P.; Jäger, K.; Becker, C.: Modelling bifacial irradiance ? Step-by-step comparison and validation of view factor and ray tracing models. Applied Energy 369 (2024), p. 123574/1-14
  doi: 10.1016/j.apenergy.2024.123574
  Open Access
• 
  Manley, P.; Hammerschmidt, M.; Zschiedrich, L.; Jäger, K.; Becker, C.; Burger, S.: Modelling luminescent coupling in multi-junction solar cells: perovskite silicon tandem case study. In: Alexander N. Sprafke, Jan Christoph Goldschmidt, Luana Mazzarella [Ed.] : Photonics for Solar Energy Systems X : 10–12 April 2024, Strasbourg, FranceSPIE, 2024 (Proceedings of SPIE ; 13014). - ISBN 978-1-5106-7346-5, p. 1301404
  doi: 10.1117/12.3023941
  Open Access (available 01.06.2025)
• 
  Riesebeck, F.; Mathies, F.; Yoo, D.; Trofimov, S.; Unger, E.; Becker, C.: Investigation of perovskite layer growth from solution on textured substrates. EPJ Photovoltaics 15 (2024), p. 19/1-10
  doi: 10.1051/epjpv/2024017
  Open Access
• 
  Schaible, J.; Nouri, B.; Höpken, L.; Kotzab, T.; Loevenich, M.; Blum, N.; Hammer, A.; Stührenberg, J.; Jäger, K.; Becker, C.; Wilbert, Stefan: Application of nowcasting to reduce the impact of irradiance ramps on PV power plants. EPJ Photovoltaics 15 (2024), p. 15/1-19
  doi: 10.1051/epjpv/2024009
  Open Access
• 
  Tirrito, M.; Manley, P.; Becker, C.; Unger, E.; Borgström, M.T.: Optical Analysis of Perovskite III-V Nanowires Interpenetrated Tandem Solar Cells. Nanomaterials 14 (2024), p. 518/1-10
  doi: 10.3390/nano14060518
  Open Access

2023

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  Jäger, K.; Berwig, S.; Kurpiers, J.; Yang, F.; Tockhorn, P.; Albrecht, S.; Becker, C.: Optical Simulations of Perovskite/Perovskite Tandem Solar Cells. In: Integrated Photonics Research, Silicon and Nanophotonics 2023 : Busan Republic of Korea, 9–13 July 2023Washington, DC: OSA, 2023. - ISBN 978-1-957171-26-5, p. JM4D.3
  doi: 10.1364/IPRSN.2023.JM4D.3
• 
  Yoo, D.; Tillmann, P.; Kraus, T.; Sutter, J.; Harter, A.; Trofimov, S.; Naydenov, B.; Jäger, K.; Hauser, H.; Becker, C.: Comparative Optical Analysis of Imprinted Nano-, Micro- and Biotextures on Solar Glasses for Increased Energy Yield. Solar RRL 7 (2023), p. 2300071/1-12
  doi: 10.1002/solr.202300071
  Open Access

2022

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  Blaesi, B.; Hanser, M.; Jäger, K.; Höhn, O.: Light trapping gratings for solar cells: an analytical period optimization approach. Optics Express 30 (2022), p. 24762-24772
  doi: 10.1364/oe.459571
  Open Access
• 
  López-Fraguas, E.; Binkowski, F.; Burger, S.; Hagedorn, S.; García-Cámara, B.; Vergaz, R.; Becker, C.; Manley, P.: Tripling the light extraction efficiency of a deep ultraviolet LED using a nanostructured p-contact. Scientific Reports 12 (2022), p. 11480/1-11
  doi: 10.1038/s41598-022-15499-7
  Open Access
• 
  Mariotti, S.; Jaeger, K.; Diederich, M.; Haertel, M.S.; Li, B.; Sveinbjoernsson, K.; Kajari-Schroeder, S.; Peibst, R.; Albrecht, S.; Korte, L.; Wietler, T.: Monolithic Perovskite/Silicon Tandem Solar Cells Fabricated Using Industrial p-Type Polycrystalline Silicon on Oxide/Passivated Emitter and Rear Cell Silicon Bottom Cell Technology. Solar RRL 6 (2022), p. 2101066/1-9
  doi: 10.1002/solr.202101066
  Open Access
• 
  Sutter, J.; Becker, C.: Nanotexturing enables perovskite/silicon tandem solar cells with 29.8% efficiency. Nature Nanotechnology 17 (2022), p. 1134-1135
  doi: 10.1038/s41565-022-01229-7
• 
  Sutter, Johannes Christian: Advanced Light Management Concepts for Silicon and Perovskite Based Solar Cells : Implementing Tailor-Made Textures in Single- and Multijunction Solar Cell Devices. , Berlin, Technische Universität, Diss., 2022
  https://api-depositonce.tu-berlin.de/server/api/core/bitstreams/d631313d-4d3f-4f16-b533-b6690c96e965/content
  Open Access
• 
  Tillmann, P.; Jäger, K.; Karsenti, A.; Kreinin, L.; Becker, C.: Model-Chain Validation for Estimating the Energy Yield of Bifacial Perovskite/Silicon Tandem Solar Cells. Solar RRL 6 (2022), p. 2200079/1-12
  doi: 10.1002/solr.202200079
  Open Access
• 
  Tockhorn, P.; Sutter, J.; Cruz, A.; Wagner, P.; Jäger, K.; Yoo, D.; Lang, F.; Grischek, M.; Li, B.; Al-Ashouri, A.; Köhnen, E.; Stolterfoht, M.; Neher, D.; Schlatmann, R.; Rech, B.; Stannowski, B.; Albrecht, S.; Becker, C.: Nanooptically Enhanced Perovskite/Silicon Tandem Solar Cells with 29.80% Power Conversion Efficiency. In: Novel Optical Materials and Applications 2022 (NOMA), Maastricht, Limburg, Netherlands, 24–28 July 2022Washington, DC: Optica Publishing Group, 2022. - ISBN 978-1-957171-16-6, p. JTu4H.2
  https://opg.optica.org/ViewMedia.cfm?uri=NOMA-2022-JTu4H.2&seq=0
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  Tockhorn, P.; Sutter, J.; Cruz, A.; Wagner, P.; Jäger, K.; Yoo, D.; Lang, F.; Grischek, M.; Li, B.; Li, J.; Shargaieva, O.; Unger, E.; Al-Ashouri, A.; Köhnen, E.; Stolterfoht, M.; Neher, D.; Schlatmann, R.; Rech, B.; Stannowski, B.; Albrecht, S.; Becker, C.: Nano-optical designs for high-efficiency monolithic perovskite–silicon tandem solar cells. Nature Nanotechnology 17 (2022), p. 1214–1221
  doi: 10.1038/s41565-022-01228-8
  Data-doi: 10.5442/ND000009
  Open Access

2021

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  Ahiboz, D.; Andresen, E.; Manley, P.; Resch Genger, U.; Wurth, C.; Becker, C.: Enhanced Photon Upconversion Using Erbium-Doped Nanoparticles Interacting with Silicon Metasurfaces. In: 48th IEEE Photovoltaic Specialists Conference, PVSC 2021 : Fort Lauderdale, Florida, USA, 20 – 25 June 2021, onlinePiscataway, NJ: IEEE, 2021. - ISBN 978-1-6654-3018-0, p. 2008-2010
  doi: 10.1109/pvsc43889.2021.9518495
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  Ahiboz, D.; Andresen, E.; Manley, P.; Resch-Genger, U.; Würth, C.; Becker, C.: Metasurface-Enhanced Photon Upconversion upon 1550 nm Excitation. Advanced Optical Materials 9 (2021), p. 2101285/1-9
  doi: 10.1002/adom.202101285
  Open Access
• 
  Becker, C.; Jäger, K.; Burger, S.: Nanophotonics for Solar Energy. Solar Energy Materials and Solar Cells 221 (2021), p. 110916/1
  doi: 10.1016/j.solmat.2020.110916
  Open Access
• 
  Gil-Escrig, L.; Roß, M.; Sutter, J.; Al-Ashouri, A.; Becker, C.; Albrecht, S.: Fully Vacuum-Processed Perovskite Solar Cells on Pyramidal Microtextures. Solar RRL 5 (2021), p. 2000553/1-9
  doi: 10.1002/solr.202000553
  Open Access
• 
  Jäger, K.; Sutter, J.; Hammerschmidt, M.; Schneider, P.-I.; Becker, C.: Prospects of light management in perovskite/silicon tandem solar cells. Nanophotonics 10 (2021), p. 1991-2000
  doi: 10.1515/nanoph-2020-0674
  Open Access
• 
  Jäger, K.; Tillmann, P.; Katz, E.A.; Becker, C.: Perovskite/Silicon Tandem Solar Cells: Effect of Luminescent Coupling and Bifaciality. Solar RRL 5 (2021), p. 2000628/1-9
  doi: 10.1002/solr.202000628
  Open Access
• 
  Manley, P.; Segantini, M.; Ahiboz, D.; Hammerschmidt, M.; Arnaoutakis, G.; MacQueen, R.W.; Burger, S.; Becker, C.: Double-Layer Metasurface for Enhanced Photon Up-Conversion. APL Photonics 6 (2021), p. 036103/1-11
  doi: 10.1063/5.0040839
  Open Access
• 
  Rössig, W.; Jäger, K.; Parbel, L.: Museum als Austauschforum – Aktivisti und Wissenschaft im Dialog. Museumskunde : Fachzeitschrift für die Museumswelt 86 (2021), p. 56-62
  https://www.museumsbund.de/publikationen/50777/#post-50823
  Open Access
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  Sutter, J.; Tockhorn, P.; Wagner, P.; Jäger, K.; Al-Ashouri, A.; Stannowski, B.; Albrecht, S.; Becker, C.: Periodically Nanostructured Perovskite/Silicon Tandem Solar Cells with Power Conversion Efficiency Exceeding 26%. In: 2021 IEEE 48th Photovoltaic Specialists Conference (PVSC) : 20-25 June 2021Piscataway, NJ: IEEE, 2021. - ISBN 978-1-6654-1922-2, p. 1034-1036
  doi: 10.1109/PVSC43889.2021.9518715
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  Tillmann, P.; Bläsi, B.; Burger, S.; Hammerschmidt, M.; Höhn, O.; Becker, C.; Jäger, K.: Optimizing metal grating back reflectors for III-V-on-silicon multijunction solar cells. Optics Express 29 (2021), p. 22517-22532
  doi: 10.1364/oe.426761
  Data-doi: 10.5442/ND000006
  Open Access
• 
  Tillmann, P.; Jäger, K.; Katz, E.A.; Becker, C.: Relaxed current-matching constraints by bifacial operation and luminescent coupling in perovskite/silicon tandem solar cells. In: 48th IEEE Photovoltaic Specialists Conference, PVSC 2021 : Fort Lauderdale, Florida, USA, 20 – 25 June 2021, onlinePiscataway, NJ: IEEE, 2021. - ISBN 978-1-6654-3018-0, p. 1086-1088
  doi: 10.1109/pvsc43889.2021.9518891
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  Tockhorn, P.; Jäger, K.; Sutter, J.; Wagner, P.; Al-Ashouri, A.; Stannowski, B.; Albrecht, S.; Becker, C.: Enhanced Optical Performance in Perovskite/Silicon Tandem Solar Cells Enabled by Periodic Nanotextures. In: Optical Society of America [Ed.] : Optical Devices and Materials for Solar Energy and Solid-state Lighting 2021 : Washington, DC United States, 26–29 July 2021Washington: Optica Publishing Group, 2021. - ISBN 978-1-943580-94-1, p. PvTh2E. 3/1-2
  doi: 10.1364/PVLED.2021.PvTh2E.3
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  Yoo, D.; Garud, S.; Amkreutz, D.; Becker, C.: Superhydrophobic Lotus Leaf Structured Foils for Light Management and Self-cleaning in Photovoltaic Devices. In: 2021 IEEE 48th Photovoltaic Specialists Conference (PVSC) : 20-25 June 2021Piscataway, NJ: IEEE, 2021. - ISBN 978-1-6654-1922-2, p. 719-721
  doi: 10.1109/pvsc43889.2021.9519019
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  Yoo, D.; Garud, S.; Trinh, C.T.; Amkreutz, D.; Becker, C.: Lotus Leaf Structured Fluoropolymer Foils for Superhydrophobicity and Enhanced Light Management in Photovoltaic Devices. IEEE Journal of Photovoltaics 12 (2021), p. 97-106
  doi: 10.1109/JPHOTOV.2021.3126122
  Open Access

2020

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  Ahiboz, D.; Manley, P.; Becker, C.: Adjustable large-area dielectric metasurfaces for near-normal oblique incident excitation. OSA Continuum 3 (2020), p. 971-981
  doi: 10.1364/OSAC.391940
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  Becker, C.; Albrecht, S.; Glunz, S.; Kajari-Schröder, S.; Wolter, S.; Paetzold, U.; Dyakonov, V.; Ahlswede, E.; Powalla, M.: Tandemsolarzellen mit Perowskiten - Die neuen Stars der Photovoltaik. In: ForschungsVerbund Erneuerbare Energien (FVEE) [Ed.] : Energy Research for Future - Forschung für die Herausforderungen der Energiewende : Jahrestagung 2019 des ForschungsVerbunds Erneuerbare Energien, 22. und 23. Oktober 2019Berlin, 2020 (FVEE Themen 2019), p. 42-46
  https://www.fvee.de/fileadmin/publikationen/Themenhefte/th2019/th2019.pdf
  Open Access
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  Bermel, P.; Saive, R.; Jäger, K.; Yoo, S.: Feature issue introduction: Optical Devices and Materials for Solar Energy and Solid-state Lighting (PVLED) 2019. Optics Express 28 (2020), p. 16027-16029
  doi: 10.1364/OE.392718
  Open Access
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  Hagedorn, S.; Walde, S.; Susilo, N.; Netzel, C.; Tillner, N.; Unger, R.-S.; Manley, P.; Ziffer, E.; Wernicke, T.; Becker, C.; Lugauer, H. - J.; Kneissel, M.; Weyers, M.: Improving AlN crystal quality and strain management on nano-patterned sapphire substrates by high temperature annealing for UVC-LEDs. Physica Status Solidi A 217 (2020), p. 1900796/1-7
  doi: 10.1002/pssa.201900796
  Open Access
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  Jäger, K.; Tillmann, P.; Becker, C.: Detailed illumination model for bifacial solar cells. Optics Express 28 (2020), p. 4751-4762
  doi: 10.1364/OE.383570
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  Jäger, K.; Tillmann, P.; Katz, E.A.; Becker, C.: Simulating bifacial perovskite/silicon tandem solar cells in large PV fields. In: Optical Devices and Materials for Solar Energy and Solid-state Lighting, PVLED 2020 : Washington; United States; 13 July 2020 through 16 July 2020Optical Society of America, 2020. - ISBN 978-1-943580-79-8, p. PvTh1G.3/1-2
  doi: 10.1364/PVLED.2020.PvTh1G.3
  Open Access (external provider)
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  Manley, P.; Walde, S.; Hagedorn, S.ia; Hammerschmidt, M.; Burger, S.; Becker, C.: Nanopatterned sapphire substrates in deep-UV LEDs: is there an optical benefit? Optics Express 28 (2020), p. 3619-3635
  doi: 10.1364/OE.379438
  Open Access
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  Sutter, J.; Eisenhauer, D.; Wagner, P.; Morales Vilches, A.B.; Rech, B.; Stannowski, B.; Becker, C.: Tailored Nanostructures for Light Management in Silicon Heterojunction Solar Cells. Solar RRL 4 (2020), p. 2000484/1-8
  doi: 10.1002/solr.202000484
  Open Access (external provider)
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  Tillmann, P.; Jäger, K.; Becker, C.: Minimising levelised cost of electricity of bifacial solar panel arrays using Bayesian optimisation. Sustainable Energy & Fuels 4 (2020), p. 254-264
  doi: 10.1039/C9SE00750D
  Open Access
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  Tockhorn, P.; Sutter, J.; Colom, R.; Kegelmann, L.; Al-Ashouri, A.; Roß, M.; Jäger, K.; Unold, T.; Burger, S.; Albrecht, S.; Becker, C.: Improved Quantum Efficiency by Advanced Light Management in Nanotextured Solution-Processed Perovskite Solar Cells. ACS Photonics 7 (2020), p. 2589–2600
  doi: 10.1021/acsphotonics.0c00935
  Open Access (external provider)
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  Würth, C.; Manley, P.; Voigt, R.; Ahiboz, D.; Becker, C.; Resch-Genger, U.: Metasurface enhanced sensitized photon upconversion: towards highly efficient low power upconversion applications and nano-scale E-field sensors. Nano Letters 20 (2020), p. 6682–6689
  doi: 10.1021/acs.nanolett.0c02548
  Open Access

2019

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  Becker, C.; Burger, S.; Jäger, K.: Nanooptische Simulationen für optoelektronische Anwendungen. Photonik – Fachzeitschrift für Optische Technologien 2 (2019), p. 42-45
  https://www.photonik.de/nanooptische-simulationen-fuer-optoelektronische-anwendungen/150/21005/386489
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  Eisenhauer, D.; Thi Trinh, C.; Amkreutz, D.; Becker, C.: Light management in crystalline silicon thin-lm solar cells with imprint-textured glass superstrate. Solar Energy Materials and Solar Cells 200 (2019), p. 109928/1-6
  doi: 10.1016/j.solmat.2019.109928
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  Jäger, K.; Jošt, M.; Sutter, J.; Tockhorn, P.; Köhnen, E.; Eisenhauer, D.; Manley, P.; Albrecht, S.; Becker, C.: Improving Monolithic Perovskite/Silicon Tandem Solar Cells From an Optical Viewpoint. In: OSA Advanced Photonics Congress (AP) 2019 (IPR, Networks, NOMA, SPPCom, PVLED) : 29 July–2 August 2019, Burlingame, California, United StatesOptical Society of America, 2019. - ISBN 978-1-943580-64-4, p. PM4C.2/1-2
  doi: 10.1364/PVLED.2019.PM4C.2
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  Jäger, K.; Tillmann, P.; Tejada, A.; Karsenti, A.; Kreinin, L.; Visoly-Fisher, I.; Korte, L.; Unger, E.; Katz, E.A.; Becker, C.: Optical assessment of perovskite-enhanced bifacial silicon solar modules. In: 36th European Photovoltaic Solar Energy Conference and ExhibitionMünchen: WIP Wirtschaft und Infrastruktur, 2019. - ISBN 3-936338-60-4, p. 634-637
  doi: 10.4229/EUPVSEC20192019-3CO.7.6
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  Pflüger, M.; Soltwisch, V.; Xavier, J.; Probst, J.; Scholze, F.; Becker, C.; Krumrey, M.: Distortion analysis of crystalline and locally quasicrystalline 2D photonic structures with grazing-incidence small-angle X-ray scattering. Journal of Applied Crystallography 52 (2019), p. 322-331
  doi: 10.1107/S1600576719001080
  Open Access

2018

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  Barth, C.; Becker, C.: Machine learning classification for field distributions of photonic modes. Communications Physics 1 (2018), p. 58/1-11
  doi: 10.1038/s42005-018-0060-1
  Open Access
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  Barth, Carlo: Analysis of photonic crystals for interaction with near-surface emitters. , Berlin, Technische Universität, Diss., 2018
  https://depositonce.tu-berlin.de/handle/11303/7702
  Open Access
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  Becker, C.; Burger, S.; Barth, C.; Manley, P.; Jäger, K.; Eisenhauer, D.; Köppel, G.; Chabera, P.; Chen, J.; Zheng, K.; Pullerits, T.: Nanophotonic-Enhanced Two-Photon-Excited Photoluminescence of Perovskite Quantum Dots. ACS Photonics 5 (2018), p. 4668-4676
  doi: 10.1021/acsphotonics.8b01199
  Open Access
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  Braunger, S.; Mundt, L.E.; Wolff, C.M.; Mews, M.; Rehermann, C.; Jost, M.; Tejada, A.; Eisenhauer, D.; Becker, C.; Guerra, J.A.; Unger, E. L.; Korte, L.; Neher, D.; Schubert, M.; Rech, B.; Albrecht, S.: Cs_xFA_1–xPb(l_1–yBr_y)₃ Perovskite Compositions: the Appearance of Wrinkled Morphology and its Impact on Solar Cell Performance. The Journal of Physical Chemistry C 122 (2018), p. 17123-17135
  doi: 10.1021/acs.jpcc.8b06459
  Open Access
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  Chen, D.; Manley, P.; Tockhorn, P.; Eisenhauer, D.; Köppel, G.; Hammerschmidt, M.; Burger, S.; Albrecht, S.; Becker, C.; Jäger, K.: Nanophotonic light management for perovskite–silicon tandem solar cells. Journal of Photonics for Energy 8 (2018), p. 022601/1-14
  doi: 10.1117/1.JPE.8.022601
  Open Access
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  Eisenhauer, D.; Rech, B.; Becker, C.: Mitigating optical losses in crystalline silicon thin-film solar cells on glass. In: 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC)IEEE, 2018. - ISBN 978-1-5386-8529-7, p. 309-313
  doi: 10.1109/PVSC.2018.8548223
  Open Access
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  Eisenhauer, D.; Sai, H.; Matsui, T.; Köppel, G.; Rech, B.; Becker, C.: Honeycomb micro-textures for light trapping in multi-crystalline silicon thin-film solar cells. Optics Express 26 (2018), p. A498-A507
  doi: 10.1364/OE.26.00A498
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  Eisenhauer, David: Tailor-made light management textures for liquid phase crystallized silicon solar cells = Maßgeschneiderte Lichtmanagement-Texturen für flüssigphasenkristallisierte Silizium-Solarzellen. , Berlin, Technische Universität, Diss., 2018
  https://depositonce.tu-berlin.de/handle/11303/8533
  Open Access
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  Jäger, K.; Chen, D.; Tockhorn, P.; Eisenhauer, D.; Köppel, G.; Manley, P.; Hammerschmidt, M.; Burger, S.; Albrecht, S.; Becker, C.: Antireflective nanotextures for monolithic perovskite-silicon tandem solar cells. In: Ralf B. Wehrspohn, Alexander N. Sprafke [Ed.] : Photonics for Solar Energy Systems VII : 23-25 April 2018, Strasbourg, France Bellingham, Wash.: SPIE, 2018 (Proceedings of SPIE ; 10688). - ISBN 978-1-5106-1902-9, p. 10688A/1-7
  doi: 10.1117/12.2306142
  Open Access
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  Jäger, K.; Köppel, G.; Hammerschmidt, M.; Burger, S.; Becker, C.: On accurate simulations of thin-film solar cells with a thick glass superstrate. Optics Express 26 (2018), p. A99-A107
  doi: 10.1364/OE.26.000A99
  Open Access
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  Jäger, K.; Manley, P.; Eisenhauer, D.; Tockhorn, P.; Sutter, J.; Hammerschmidt, M.; Burger, S.; Albrecht, S.; Becker, C.: Light management with sinusoidal nanotextures. In: Optics for Solar Energy 2018 : Singapore Singapore 5–8 November 2018Optical Society of America, 2018. - ISBN 978-1-943580-47-7, p. OTC5C.5/1-2
  doi: 10.1364/OSE.2018.OT5C.5
  Open Access
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  Jošt, M.; Köhnen, E.; Morales-Vilches, A.B.; Lipovšek, B.; Jäger, K.; Macco, B.; Al-Ashouri, A.; Krc, J.; Korte, L.; Rech, B.; Schlatmann, R.; Topic, M.; Stannowski, B.; Albrecht, S.: Textured interfaces in monolithic perovskite/silicon tandem solar cells: advanced light management for improved efficiency and energy yield. Energy & Environmental Science 11 (2018), p. 3511-3523
  doi: 10.1039/C8EE02469C
  Open Access
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  MacQueen, R.W.; Liebhaber, M.; Niederhausen, J.; Mews, M.; Gersmann, C.; Jäckle, S.; Jäger, K.; Tayebjee, M.J.Y.; Schmidt, T.W.; Rech, B.; Lips, K.: Crystalline silicon solar cells with tetracene interlayers: the path to silicon-singlet fission heterojunction devices. Materials Horizons 5 (2018), p. 1065-1075
  doi: 10.1039/C8MH00853A
  Open Access
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  Manley, P.; Abdi, F.F.; Berglund, S.; Islam, A. T. M. N.; Burger, S.; Krol, R.v.d.; Schmid, M.: Absorption Enhancement for Ultrathin Solar Fuel Devices with Plasmonic Gratings. ACS Applied Energy Materials 1 (2018), p. 5810-5815
  doi: 10.1021/acsaem.8b01070
  Open Access
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  Manley, P.; Song, M.; Burger, S.; Schmid, M.: Efficient determination of bespoke optically active nanoparticle distributions. Journal of Optics 20 (2018), p. 085003/1-11
  doi: 10.1088/2040-8986/aad114
  Open Access
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  Mazzarella, L.; Werth, M.; Jäger, K.; Jošt, M.; Korte, L.; Albrecht, S.; Schlatmann, R.; Stannowski, B.: Infrared photocurrent management in monolithic perovskite/silicon heterojunction tandem solar cells by using a nanocrystalline silicon oxide interlayer. Optics Express 26 (2018), p. A487-A497
  doi: 10.1364/OE.26.00A487
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  Trinh, C.T.; Preissler, N.; Sonntag, P.; Muske, M.; Jäger, K.; Trahms, M.; Schlatmann, R.; Rech, B.; Amkreutz, D.: Potential of interdigitated back-contact silicon heterojunction solar cells for liquid phase crystallized silicon on glass with efficiency above 14%. Solar Energy Materials and Solar Cells 174 (2018), p. 187-195
  doi: 10.1016/j.solmat.2017.08.042
  Open Access

2017

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  Barth, C.; Roder, S.; Brodoceanu, D.; Kraus, T.; Hammerschmidt, M.; Burger, S.; Becker, C.: Increased fluorescence of PbS quantum dots in photonic crystals by excitation enhancement. Applied Physics Letters 111 (2017), p. 03111/1-5
  doi: 10.1063/1.4995229
  Open Access
• 
  Eisenhauer, D.; Köppel, G.; Jäger, K.; Chen, D.; Shargaieva, O.; Sonntag, P.; Amkreutz, D.; Rech, B.; Becker, C.: Smooth anti-reflective three-dimensional textures for liquid phase crystallized silicon thin-film solar cells on glass. Scientific Reports 7 (2017), p. 2658/1-10
  doi: 10.1038/s41598-017-02874-y
  Open Access
• 
  Eisenhauer, D.; Köppel, G.; Rech, B.; Becker, C.: Improved Light Management in Crystalline Silicon Thin-Film Solar Cells by Advanced Nano-Texture Fabrication. In: Optics and Photonics for Energy and the Environment : part of Light, Energy and the Environment : 6-9 November 2017, Boulder, Colorado, United StatesOptical Society of America, 2017. - ISBN 978-1-943580-36-1, p. PW2A.4/1-3
  doi: 10.1364/PV.2017.PW2A.4
  Open Access
• 
  Jäckle, S.; Liebhaber, M.; Gersmann, C.; Mews, M.; Jäger, K.; Christiansen, S.; Lips, K.: Potential of PEDOT:PSS as a hole selective front contact for silicon heterojunction solar cells. Scientific Reports 7 (2017), p. 2170/1-8
  doi: 10.1038/s41598-017-01946-3
  Open Access
• 
  Jäger, K.; Köppel, G.; Eisenhauer, D.; Chen, D.; Hammerschmidt, M.; Burger, S.; Becker, C.: Optical simulations of advanced light management for liquid-phase crystallized silicon thin-film solar cells. In: Yi-Jun Jen ... [Ed.] : Nanostructured Thin Films X : 9-10 August 2017, San Diego, California, United StatesBellingham, Washington, USA: SPIE, 2017 (Proceedings of SPIE ; 10356). - ISBN 978-1-5106-1169-6, p. 103560F/1-7
  doi: 10.1117/12.2273994
  Open Access
• 
  Jäger, K.; Korte, L.; Rech, B.; Albrecht, S.: Numerical Optical Optimization of Planar Perovskite-Silicon Tandem Solar Cells with Regular and Inverted Device Architectures. Optics Express 25 (2017), p. A473-A482
  doi: 10.1364/OE.25.00A473
• 
  Köppel, G.; Amkreutz, D.; Sonntag, P.; Yang, G.; van Swaaij, R.; Isabella, O.; Zeman, M.; Rech, B.; Becker, C.: Periodic and Random Substrate Textures for Liquid Phase Crystallized Silicon Thin-Film Solar Cells. IEEE Journal of Photovoltaics 7 (2017), p. 85-90
  doi: 10.1109/JPHOTOV.2016.2618605
  Open Access
• 
  Köppel, G.; Eisenhauer, D.; Rech, B.; Becker, C.: Combining tailor-made textures for light incoupling and light trapping in liquid phase crystallized silicon thin-film solar cells. Optics Express 25 (2017), p. A467-A472
  doi: 10.1364/OE.25.00A467
• 
  Köppel, G.; Eisenhauer, D.; Rech, B.; Becker, C.: Tailoring nano-textures for optimized light in-coupling in liquid phase crystallized silicon thin-film solar cells. Physica Status Solidi C 14 (2017), p. 1700175/1-5
  doi: 10.1002/pssc.201700175
  Open Access
• 
  Köppel, Grit: Liquid Phase Crystallized Silicon on Sinusoidal Textured Glass Substrates : Silicon Material Quality and Absorption Enhancement. , Berlin, Technische Universität, Diss., 2017
  https://depositonce.tu-berlin.de/handle/11303/6425
  Open Access
• 
  Schmid, M.; Yin, G.; Song, A.; Duan, S.; Heidmann, B.; Sancho-Martinez, D.; Kämmer, S.; Köhler, T.; Manley, P.; Lux-Steiner, M.: Concentrating light in Cu(In,Ga)Se₂ solar cells. Journal of Photonics for Energy 7 (2017), p. 018001/1-8
  doi: 10.1117/1.JPE.7.018001
  Open Access
• 
  Xavier, J.; Probst, J.; Becker, Ch.: Nanoimprinted deterministic aperiodic nanostructures for tailored light matter interactions. In: European Physical Society [Ed.] : 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO Europe-EQEC) : 25-29 June 2017Piscataway, NJ: IEEE, 2017. - ISBN 978-1-5090-6736-7, p. 855

2016

• 
  Albrecht, S.; Saliba, M. ; Correa-Baena, J.-P. ; Jaeger, K.; Korte, L. ; Hagfeldt, A. ; Grätzel, M.; Rech, B. : Towards optical optimization of planar monolithic perovskite/silicon-heterojunction tandem solar cells. Journal of Optics 18 (2016), p. 064012/1-10
  doi: 10.1088/2040-8978/18/6/064012
  Open Access
• 
  Albrecht, S.; Saliba, M.; Correa-Baena, J.-P.; Jäger, K.; Korte, L.; Hagfeldt, A.; Grätzel, M.; Rech, B.: Monolithic Perovskite/Silicon Tandem Solar Cells. In: Hardo Bruhns [Ed.] : Energie - Forschung und PerspektivenDeutsche Physikalische Gesellschaft, 2016. - ISBN 978-3-9818197-0-0, p. 69-82
  http://www.fze.uni-saarland.de/AKE_Archiv/DPG2016-AKE_Regensburg/Buch/DPG2016-Regensburg_Tagungsband_142p.pdf
  Open Access
• 
  Barth, C.; Burger, S.; Becker, C.: Symmetry-dependency of anticrossing phenomena in slab-type photonic crystals. Optics Express 24 (2016), p. 10931/1-8
  doi: 10.1364/OE.24.010931
• 
  Barth, C.; Probst, J.; Herrmann, S.; Hammerschmidt, M.; Becker, C.: Numerical characterization of symmetry properties for photonic crystals with hexagonal lattice. In: Dario Gerace ... [Ed.] : Photonic Crystal Materials and Devices XII Bellingham, Washington: SPIE, 2016 (Proceedings of SPIE ; 9885), p. 988506/1-12
  doi: 10.1117/12.2227094
  Open Access
• 
  Eisenhauer, D.; Jäger, K.; Köppel, G.; Rech, B.; Becker, C.: Optical properties of smooth anti-reflective three-dimensional textures for silicon thin-film solar cells. Energy Procedia 102 (2016), p. 27-35
  doi: 10.1016/j.egypro.2016.11.314
• 
  Eisenhauer, D.; Köppel, G.; Jäger, K.; Rech, B.; Becker, C.: Imprinted Nanostructures for Light Management in Crystalline Silicon Thin-Film Solar Cells on Glass. In: Optical Nanostructures and Advanced Materials for Photovoltaics 2016, Leipzig, Germany, 14–17 November 2016 In: Light, Energy and the Environment, OSAOptical Society of America, 2016. - ISBN 978-0-9600380-4-6, p. PM2B.5/1-3
  doi: 10.1364/PV.2016.PM2B.5
  Open Access
• 
  Hammerschmidt, M.; Barth, C.; Pomplun, J.; Burger, S.; Becker, C.; Schmidt, F: Reconstruction of photonic crystal geometries using a reduced basis method for nonlinear outputs. Berlin: ZIB, 2016 ZIB-Report (16-06)
  https://opus4.kobv.de/opus4-zib/frontdoor/index/index/docId/5724
  Open Access
• 
  Hammerschmidt, M.; Barth, C.; Pomplun, J.; Burger, S.; Becker, C.; Schmidt, F.: Reconstruction of photonic crystal geometries using a reduced basis method for nonlinear outputs. In: Ali Adibi; Shawn-Yu Lin; Axel Scherer [Eds.] : Photonic and Phononic Properties of Engineered Nanostructures VIBellingham: SPIE, 2016 (Proceedings of SPIE ; 9756), p. 97561R/1-9
  doi: 10.1117/12.2212482
  Open Access (external provider)
• 
  Jaeger, K.; Hammerschmidt, M.; Köppel, G.; Burger, S.; Becker, C.: On accurate simulations of thin-film solar cells with a thick glass superstrate. In: Optical Nanostructures and Advanced Materials for Photovoltaics. In Proceedings Light, Energy and the Environment Part of Light, Energy and the Environment, 14–17 November 2016, Leipzig, GermanyOptical Society of America, 2016. - ISBN 978-0-9600380-4-6, p. PM3B.5/1-3
  doi: 10.1364/PV.2016.PM3B.5
  Open Access
• 
  Jäger, K.; Barth, C.; Hammerschmidt, M.; Herrmann, S.; Burger, S.; Schmidt, F.; Becker, C.: Simulations of sinusoidal nanotextures for coupling light into c-Si thin-film solar cells. Optics Express 24 (2016), p. A569-A580
  doi: 10.1364/OE.24.00A569
• 
  Jäger, K.; Köppel, G.; Barth, C.; Hammerschmidt, M.; Herrmann, S.; Burger, S.; Schmidt, F.; Becker, C.: Sinusoidal Gratings for Optimized Light Management in c-Si Thin-Film Solar Cells. In: Ralf B. Wehrspohn ... [Ed.] : Photonics for Solar Energy Systems VI : 5-7 April 2016, Brussels, BelgiumBellingham, Washington: SPIE, 2016 (Proceedings of SPIE ; 9898). - ISBN 978-1-5106-0143-7
  doi: 10.1117/12.2225459
  Open Access
• 
  Köppel, G.; Amkreutz, D.; Sonntag, P.; Yang, G.; van Swaaij, R.; Isabella, O.; Zeman, M.; Rech, B.; Becker, C.: Facing the challenge of liquid phase crystallizing silicon on textured glass substrates. In: Photovoltaic Specialists Conference (PVSC), 2016 IEEE 43rd IEEE , 2016. - ISBN 978-1-5090-2724-8 , p. 0672-0677
  doi: 10.1109/PVSC.2016.7749685
  Open Access
• 
  Köppel, G.; Rech, B.; Becker, C.: Sinusoidal nanotextures for light management in silicon thin-film solar cells. Nanoscale 8 (2016), p. 8722-8728
  doi: 10.1039/C5NR08917D
  Open Access
• 
  Pikna, P.; Müller, M.; Becker, C.; Fejfar, A.: Passivation effect of water vapour on thin film polycrystalline Si solar cells. Physica Status Solidi A 213 (2016), p. 1969-1975
  doi: 10.1002/pssa.201533006
• 
  Pikna, P.; Skoromets, V.; Becker, C.; Fejfar, A.; Kuzel, P.: Thin film polycrystalline silicon solar cells studied by transient terahertz probe spectroscopy. Energy Procedia 102 (2016), p. 19-26
  doi: 10.1016/j.egypro.2016.11.313
• 
  Skoromets, V.; Pikna, P.; Becker, C.; Fejfar, A.; Kuzel, P.: Contactless probing of thin film Si solar cells by time-resolving THz spectroscopy. In: International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THzPiscataway, NJ: IEEE, 2016. - ISBN 978-1-4673-8485-8, p. 1/2
  doi: 10.1109/IRMMW-THz.2016.7758571
• 
  Xavier, J.; Probst, J.; Becker, C.: Deterministic composite nanophotonic lattices in large area for broadband applications. Scientific Reports 6 (2016), p. 38744/1-12
  doi: 10.1038/srep38744
  Open Access
• 
  Eisenhauer, D.; Köppel, G.; Rech, B.; Becker, C.: Angle-resolved reflectivity analysis of textured substrates for liquid-phase crystallized silicon thin-film solar cells. In: Fourier Transform Spectroscopy 2016, Leipzig Germany, 14–17 November 2016, IN: Light, Energy and the Environment Congress, Optics and Photonics for Energy and the EnvironmentOSA, 2016. - ISBN 978-0-9600380-4-6, p. JW4A.35/1-3
  doi: 10.1364/FTS.2016.JW4A.35
  Open Access

2015

• 
  Azarpira, A.; Lublow, M.; Steigert, A.; Bogdanoff, P.; Greiner, D.; Kaufmann, C.A.; Krüger, M.; Gernert, U.; van de Krol, R.; Fischer, A.; Schedel-Niedrig, T.: Efficient and Stable TiO₂ :Pt–Cu(In,Ga)Se₂ Composite Photoelectrodes for Visible Light Driven Hydrogen Evolution. Advanced Energy Materials 5 (2015), p. 1402148/1-9
  doi: 10.1002/aenm.201402148
• 
  Becker, C.; Preidel, V.; Amkreutz, D.; Haschke, J.; Rech, B.: Double-side textured liquid phase crystallized silicon thin-film solar cells on nanoimprinted glass. Solar Energy Materials and Solar Cells 135 (2015), p. 2–7
  doi: 10.1016/j.solmat.2014.08.031
• 
  Fejfar, A.; Hývl, M.; Vetushka, A.; Pikna, P.; Hájková, Z.; Ledinský, M.; Kocka, J.; Klapetek, P.; Marek, A.; Mašková, C.; Vyskocil, J.; Merkel, J.; Becker, C.; Itoh, T.; Misra, S.; Foldyna, M.; Yu, L.; Roca i Cabarrocas, P.: Correlative microscopy of radial junction nanowire solar cells using nanoindent position markers. Solar Energy Materials and Solar Cells 135 (2015), p. 106–112
  doi: 10.1016/j.solmat.2014.10.027
• 
  Jäger, K.; Linssen, D.N.P.; Isabella, O.; Zeman, M.: Ambiguities in optical simulations of nanotextured thin-film solar cells using the finite-element method. Optics Express 23 (2015), p. A1060-A1071
  doi: 10.1364/OE.23.0A1060
• 
  Köppel, G.; Preidel, V.; Mangold, S.; Rudigier-Voigt, E.; Hývl, M.; Fejfar, A.; Rech, B.; Becker, C.: Nanoimprint-textured glass superstrates for light trapping in crystalline silicon thin-film solar cells. Energy Procedia 84 (2015), p. 118-126
  doi: 10.1016/j.egypro.2015.12.304
• 
  Muydinov, R.; Ruske, F.; Neubert, S.; Steigert, A.; Klaus, M.; Selve, S.; Köppel, G.; Szyszka, B.: Combination of nitrogen mediated crystallisation with post-deposition annealing - Towards ultra-thin ZnO:Al contacts. Thin Solid Films 589 (2015), p. 750-754
  doi: 10.1016/j.tsf.2015.07.012
• 
  Pikna, P.; Skoromets, V.; Becker, C.; Fejfar, A.; Kužel, P.: Thin Film Polycrystalline Si Solar Cells Studied in Transient Regime by Optical Pump – Terahertz Probe Spectroscopy. Applied Physics Letters 107 (2015), p. 233901/1-5
  doi: 10.1063/1.4937388
• 
  Preidel, V.; Haschke, J.; Amkreutz, D.; Wollgarten, M.; Rech, B.; Becker, C.: Balance of optical, structural, and electrical properties of textured liquid phase crystallized Si solar cells. Journal of Applied Physics 117 (2015), p. 225306/1-7
  doi: 10.1063/1.4922138
  Open Access
• 
  Preidel, Veit: Kristalline Silizium-Dünnschichten auf nanoimprintstrukturiertem Glas – Wachstum, Lichteinfang und Solarzellen –. , Technische Universität Berlin, 2015
  Open Access
• 
  Eisenhauer, D.; Pollakowski, B.; Baumann, J.; Preidel, V.; Amkreutz, D.; Rech, B.; Back, F.; Rudigier-Voigt, E.; Beckhoff, B.; Kanngießer, B.; Becker, C.: Grazing incidence X-ray fluorescence analysis of buried interfaces in periodically structured crystalline silicon thin-film solar cells. Physica Status Solidi A 212 (2015), p. 529-534
  doi: 10.1002/pssa.201400112

2014

• 
  Becker, C.; Wyss, P.; Eisenhauer, D.; Probst, J.; Preidel, V.; Hammerschmidt, M.; Burger, S.: 5 x 5 cm² silicon photonic crystal slabs on glass and plastic foil revealing broadband absorption and high-intensity near-fields. Scientific Reports 4 (2014), p. 5886/1-7
  doi: 10.1038/srep05886
  Open Access
• 
  Hrkac, V.; Lage, E.; Köppel, G.; Strobel, J.; McCord, J.; Quandt, E.; Meyners, D.; Kienle, L.: Amorphous FeCoSiB for exchange bias coupled and decoupled magnetoelectric multilayer systems: Real-structure and magnetic properties. Journal of Applied Physics 116 (2014), p. 134302/1-7
  doi: 10.1063/1.4896662
• 
  Lockau, D.; Sontheimer, T.; Preidel, V.; Ruske, F.; Hammerschmidt, M.; Becker, C.; Schmidt, F.; Rech, B.: Advanced microhole arrays for light trapping in thin film silicon solar cells. Solar Energy Materials and Solar Cells 125 (2014), p. 298-304
  doi: 10.1016/j.solmat.2013.11.024
• 
  Steffens, S.; Becker, C.; Amkreutz, D.; Klossek, A.; Kittler, M.; Chen, Y.-Y.; Schnegg, A.; Klingsporn, M.; Abou-Ras, D.; Lips, K.; Rech, B.: Impact of dislocations and dangling bond defects on the electrical performance of crystalline silicon thin films. Applied Physics Letters 105 (2014), p. 022108/1-5
  doi: 10.1063/1.4890625
  Open Access (external provider)
• 
  Xavier, J.; Becker, C.: Computational analysis of triangular and honeycomb lattice-structured tapered nanoholes for enhanced light trapping in thin-film Si solar cells. In: Ralf B. Wehrspohn ... [Ed.] : Photonics for Solar Energy Systems VSPIE, 2014 (Proceedings of SPIE ; 9140). - ISBN 978-1-6284-1088-4, p. 91401B/1-9
  doi: 10.1117/12.2052800
• 
  Xavier, J.; Joseph, J.: Complex photonic lattices embedded with tailored intrinsic defects by a dynamically reconfigurable single step interferometric approach. Applied Physics Letters 104 (2014)
  doi: 10.1063/1.4866660
• 
  Xavier, J.; Probst, J.; Back, F.; Wyss, P.; Eisenhauer, D.; Löchel, B.; Rudigier-Voigt, E.; Becker, C.: Quasicrystalline-structured light harvesting nanophotonic silicon films on nanoimprinted glass for ultra-thin photovoltaics. Optical Materials Express 4 (2014), p. 2290-2299
  doi: 10.1364/OME.4.002290
• 
  Xavier, J.; Probst, J.; Wyss, P.; Eisenhauer, D.; Back, F.; Rudigier-Voigt, E.; Hülsen, C.; Löchel, B.; Becker, C.: Light harvesting quasicrystalline nanophotonic structures for crystalline silicon thin-film solar cells. In: Ralf B. Wehrspohn ... [Ed.] : Photonics for Solar Energy Systems VSPIE, 2014 (Proceedings of SPIE ; 9140). - ISBN 978-1-6284-1088-4, p. 914004/1-5
  doi: 10.1117/12.2052796
• 
  Zachäus, C.; Becker, C.; Ruske, F.; Rech, B.: Crack formation and Zn diffusion in high-temperature processed poly-Si/ZnO:Al stacks. Thin Solid Films 566 (2014), p. 83-87
  doi: 10.1016/j.tsf.2014.07.025

2013

• 
  Becker, C.; Amkreutz, D.; Sontheimer, T.; Preidel, V.; Lockau, D.; Haschke, J.; Jogschies, L.; Klimm, C.; Merkel, J.J.; Plocica, P.; Steffens, S.; Rech, B.: Polycrystalline silicon thin-film solar cells: Status and perspectives. Solar Energy Materials and Solar Cells 119 (2013), p. 112-123
  doi: 10.1016/j.solmat.2013.05.043
• 
  Becker, C.; Xavier, J.; Preidel, V.; Wyss, P.; Sontheimer, T.; Rech, B.; Probst, J.; Hülsen, C.; Löchel, B.; Erko, A.; Burger, S.; Schmidt, F.; Back, F.; Rudigier-Voigt, E.: Nanophotonic light trapping in polycrystalline silicon thin-film solar cells using periodically nanoimprint-structured glass substrates. In: Sulima, O.V. [Ed.] : Next generation (nano) photonic and cell technologies for solar energy conversion IV : 25 - 27 August 2013, San Diego, California, United StatesBellingham, Wash.: SPIE, 2013 (Proceedings of SPIE ; 8824). - ISBN 978-0-8194-9674-4, p. 88240D/1-9
  doi: 10.1117/12.2023871
• 
  Eisenhauer, David: Röntgenfluoreszenzanalyse der Grenzflächen von photovoltaischen und photonischen Silizium-Nanoarchitekturen. , Technische Universität Berlin, 2013
  Open Access (available 01.01.3000)
• 
  Lockau, D.; Sontheimer, T.; Preidel, V.; Becker, C.; Ruske, F.; Schmidt, F.; Rech, B.: Optical properties and Limits of a Large-Area Periodic Nanophotonic Light Trapping Design for Polycrystalline Silicon Thin Film Solar Cells. In: Photovoltaic technologies, devices and systems based on inorganic materials, small organic molecules and hybrids : symposium held November 25 - 30, 2012, Boston, Massachusetts, U.S.A., 2013. - ISBN 978-1-60511-470-5, p. 59-64
  doi: 10.1557/opl.2013.28
• 
  Preidel, V.; Amkreutz, D.; Sontheimer, T.; Back, F.; Rudigier-Voigt, E.; Rech, B.; Becker, C.: A novel light trapping concept for liquid phase crystallized poly-Si thin-film solar cells on periodically nanoimprinted glass substrates. Proceedings of SPIE 8823 (2013), p. 882307/1-5
  doi: 10.1117/12.2023989
• 
  Preidel, V.; Lockau, D.; Sontheimer, T.; Back, F.; Rudigier-Voigt, E.; Rech, B.; Becker, C.: Analysis of absorption enhancement in tailor-made periodic polycrystalline silicon microarrays. Physica Status Solidi - Rapid Research Letters 7 (2013), p. 1045–1049
  doi: 10.1002/pssr.201308098
• 
  Steffens, S.; Becker, C.; Rech, B.: Optical analysis of subbandgap defects in polycrystalline silicon thin film solar cells. In: 39th IEEE Photovoltaic Specialists Conference, PVSC 2013 : Tampa, Florida, USA, 16.06.2013-21.06.2013, 2013. - ISBN 978-1-4799-3299-3, p. 1374-1378
  doi: 10.1109/PVSC.2013.6744400

• 
  Becker, C.; Pagels, M.; Zachäus, C.; Pollakowski, B.; Beckhoff, B.; Kanngießer, B.; Rech, B.: Chemical speciation at buried interfaces in high-temperature processed polycrystalline silicon thin-film solar cells on ZnO:Al. Journal of Applied Physics 113 (2013), p. 044519/1-7
  doi: 10.1063/1.4789599
• 
  Lockau, D.; Sontheimer, T.; Becker, C.; Rudigier-Voigt, E.; Schmidt, F.; Rech, B.: Nanophotonic light trapping in 3-dimensional thin-film silicon architectures. Optics Express 21 (2013), p. A42-A52
  doi: 10.1364/OE.21.000A42
• 
  Merkel, J.J.; Sontheimer, T.; Rech, B.; Becker, C.: Directional growth and crystallization of silicon thin films prepared by electron-beam evaporation on oblique and textured surfaces. Journal of Crystal Growth 367 (2013), p. 126-130
  doi: 10.1016/j.jcrysgro.2012.12.037
• 
  Sontheimer, T.; Preidel, V.; Lockau, D.; Back, F.; Rudigier-Voigt, E.; Löchel, B.; Erko, A.; Schmidt, F.; Schnegg, A.; Lips, K.; Becker, C.; Rech, B.: Correlation between structural and opto-electronic characteristics of crystalline Si microhole arrays for photonic light management. Journal of Applied Physics 114 (2013), p. 173513/1-5
  doi: 10.1063/1.4829008
  Open Access (external provider)
• 
  Steffens, S.; Becker, C.; Zollondz, J.-H.; Chowdhury, A.; Slaoui, A.; Lindekugel, S.; Schubert, U.; Evans, R.; Rech, B.: Defect annealing processes for polycrystalline silicon thin-film solar cells. Materials Science and Engineering B 178 (2013), p. 670-675
  doi: 10.1016/j.mseb.2012.11.002

2012

• 
  Becker, C.; Lockau, D.; Sontheimer, T.; Schubert-Bischoff, P.; Rudigier-Voigt, E.; Bockmeyer, M.; Schmidt, F.; Rech, B.: Large-area 2D periodic crystalline silicon nanodome arrays on nanoimprinted glass exhibiting photonic band structure effects. Nanotechnology 23 (2012), p. 135302/1-6
  doi: 10.1088/0957-4484/23/13/135302
• 
  Becker, C.; Preidel, V.; Sontheimer, T.; Klimm, C.; Rudigier-Voigt, E.; Bockmeyer, M.; Rech, B.: Direct growth of periodic silicon nanostructures on imprinted glass for photovoltaic and photonic applications. Physica Status Solidi C 9 (2012), p. 2079-2082
  doi: 10.1002/pssc.201200158
• 
  Sontheimer, T.; Rudigier-Voigt, E.; Bockmeyer, M.; Lockau, D.; Klimm, C.; Becker, C.; Rech, B.: Light harvesting architectures for electron beam evaporated solid phase crystallized Si thin film solar cells: Statistical and periodic approaches. Journal of Non-Crystalline Solids 358 (2012), p. 2303-2307
  doi: 10.1016/j.jnoncrysol.2011.10.025

2011

C. Becker, H. Häberlein, G. Schöpe, J. Hüpkes, B. Rech. Contact resistivity measurements of the buried Si-ZnO:Al interface of polycrystalline silicon thin-film solar cells on ZnO:Al. Thin Solid Films 520, 1268 (2011).
http://dx.doi.org/10.1016/j.tsf.2011.04.197

T. Sontheimer, E. Rudigier-Voigt, M. Bockmeyer, C. Klimm, P. Schubert-Bischoff, C. Becker, B. Rech. Large-area fabrication of equidistant free-standing Si Crystals on nanoimprinted glass. physica status solidi RRL 5, 376 (2011). Cover story.
http://dx.doi.org/10.1002/pssr.201105437

T. Sontheimer, S. Scherf, C. Klimm, C. Becker, B. Rech. Characterization and control of crystal nucleation in amorphous electron beam evaporated silicon for thin film solar cells. Journal of Applied Physics 110, 063530 (2011).
http://dx.doi.org/10.1063/1.3627373

C. Becker, T. Sontheimer, S. Steffens, S. Scherf, B. Rech. Polycrystalline silicon thin films by high-rate electronbeam evaporation for photovoltaic applications – Influence of substrate texture and temperature. Energy Procedia 10, 61 (2011).
http://dx.doi.org/10.1016/j.egypro.2011.10.153

2010

S. Gall, C. Becker, K. Y. Lee, T. Sontheimer, B. Rech. Growth of polycrystalline silicon on glass for thin-film solar cells. Journal of Crystal Growth 312, 1277 (2010).
http://dx.doi.org/10.1016/j.jcrysgro.2009.12.065

M. Pagels, F. Reinhardt, B. Pollakowski, M. Roczen, C. Becker, K. Lips B. Rech, B. Kanngießer, B. Beckhoff. GIXRF-NEXAFS investigations on buried ZnO/Si interfaces: A first insight in changes of chemical states due to annealing of the specimen. Nuclear Instruments and Methods in Physics Research B 268, 370 (2010).
http://dx.doi.org/10.1016/j.nimb.2009.09.009

T. Sontheimer, C. Becker, S. Gall, B. Rech. Crystal nucleation in electron-beam evaporated amorphous silicon on ZnO:Al and SiN coated glass for thin film solar cells. physica status solidi c 7, 525 (2010).
http://dx.doi.org/10.1002/pssc.200982774

2009

C. Becker, F. Ruske, T. Sontheimer, B. Gorka, U. Bloeck, S. Gall, B. Rech. Microstructure and photovoltaic performance of polycrystalline silicon thin films on temperature-stable ZnO:Al layers. Journal of Applied Physics 106, 084506 (2009).
http://dx.doi.org/10.1063/1.3240343

T. Sontheimer, C. Becker, U. Bloeck, S. Gall, B Rech. Crystallization kinetics in electron-beam evaporated amorphous silicon on ZnO:Al-coated glass for thin film solar cells. Applied Physics Letters 95, 101902 (2009).
http://dx.doi.org/10.1063/1.3222917

C. Becker, E. Conrad, P. Dogan, F. Fenske, B. Gorka, T. Hänel, K. Y. Lee, B. Rau, F. Ruske, T. Weber, M. Berginski, J. Hüpkes, S. Gall, B. Rech. Solid phase crystallization of amorphous silicon on ZnO:Al for thin film solar cells. Solar Energy Materials and Solar Cells 93, 855 (2009).
http://dx.doi.org/10.1016/j.solmat.2008.09.059

S. Gall, C. Becker, E. Conrad, P. Dogan, F. Fenske, B. Gorka, K. Y. Lee, B. Rau, F. Ruske, B. Rech. Polycrystalline silicon thin-film solar cells on glass. Solar Energy Materials and Solar Cells 93, 1004 (2009).
http://dx.doi.org/10.1016/j.solmat.2008.11.029

B. Gorka, B. Rau, P. Dogan, C. Becker, F. Ruske, S. Gall, B. Rech. Influence of Hydrogen Plasma on the Defect Passivation of Polycrystalline Si Thin Film Solar Cells. Plasma Processes and Polymers 6 , S36 (2009).
http://dx.doi.org/10.1002/ppap.200930202

2007

K. Y. Lee, C. Becker, M. Muske, F. Ruske, S. Gall, B. Rech, M. Berginski, J. Hüpkes. Temperature stability of ZnO:Al film properties for poly-Si thin-film devices. Applied Physics Letters 91, 241911 (2007).
http://dx.doi.org/10.1063/1.2824456

Patents

• German Patent DE 10 2011 111 629.B4, Verfahren zur Herstellung periodischer kristalliner Silizium-Nanostrukturen, filed: 25.08.2011, issued: 28.02.2013, Helmholtz-Zentrum Berlin für Materialien und Energie, Inventors: C. Becker, T. Sontheimer, E. Rudigier-Voigt, M. Bockmeyer, B. Rech.
• International Patent WO/2013/027123, Method for producing periodic crystalline silicon nanostructures, filed: 22.08.2012
• European Patent EP 2 748 653 B1, Verfahren zur Herstellung periodischer kristalliner Silizium-Heterostrukturen, filed: 22.08.2012, issued: 13.01.2016
• German Patent 10 2013 109 163.9, Verfahren zur Herstellung polykristalliner, 3D-Strukturen aufweisender Siliziumschichten homogener Dicke, filed: 23.08.2013, Helmholtz-Zentrum Berlin für Materialien und Energie, Inventors: D. Amkreutz, V. Preidel, B. Rech, T. Sontheimer, C. Becker
• German Patent 10 2014 105 319.2, Verfahren zur Herstellung strukturierter Schichten mit einer photonischen Bandstruktur und Anordnung mit einer solchen Schicht, filed: 14.04.2014, Helmholtz-Zentrum Berlin für Materialien und Energie, Inventors: J. Xavier, J. Probst, P. Wyss, C. Becker
• German Patent DE 10 2016 107 877.8, Lichtdurchlässiger Träger für einen halbleitenden Dünnschichtaufbau sowie Verfahren zur Herstellung und Anwendung des lichtdurchlässigen Trägers, filed: 28.04.2016, Helmholtz-Zentrum Berlin für Materialien und Energie, Inventors: D. Eisenhauer, G. Köppel, C. Becker, B. Rech