News HZB Synergy

Research Highlights

  • Nanostructures trap the light, shows this illustration on the cover in Advanced Optical Materials (Credit: Adv. Opt. Mat. 5/2017) 10.03.2017

    How to increase efficiencies of ultrathin CIGSe solar cells

    Nanoparticles at the back help harvesting light.

    Ultrathin CIGSe solar cells need much less rare earth elements and energy for production. Unfortunately, they are much less efficient too. Now a team at HZB together with a group in the Netherlands has shown how to prevent the absorption loss of ultrathin CIGSe cells.  They designed  nanostructured  back contacts for light trapping and could achieve a new record value of the the short circuit current density reaching nearly the best values for thicker CIGSe-cells. [...].

  • Zeiss Orion NanoFab microscope at the HZB CoreLab CCMS (Photo: HZB). 10.03.2017

    Latest News about the Microscopy CoreLab CCMS: Customer Demonstration and Workshop Announcement

    HZB is equipped with the latest scanning electron and ion microscopes made by ZEISS and has been a member of the labs@location partner program since 2015. ZEISS uses this program to cooperate with proven expert researchers to share experience and give interested people access to its microscopes. Now the first test customer demonstration has been given at the HZB.

    [...].

  • Lithium ions migrate through the electrolyte (yellow) into the layer of crystalline silicon (c-Si). During the charging cycle, a 20-nm layer (red) develops on the silicon electrode adsorbing extreme quantities of lithium atoms (Credit: HZB)08.08.2016

    Lithium-ion batteries: Capacity might be increased by six times

    The capacity of lithium-ion batteries might be increased by six times by using anodes made of silicon instead of graphite. A team from Helmholtz-Zentrum Berlin (HZB) Institute of Soft Matter and Functional Materials has observed for the first time in detail how lithium ions migrate into thin films of silicon. It was shown that extremely thin layers of silicon would be sufficient to achieve the maximal load of lithium.

    [...].

  • Fabian Weber (right) is investigating the dynamics of electron processes within graphene-oxide quantum dots as a member of the team headed by Dr. Annika Bande (left). (Credit: HZB)01.08.2016

    Two Freigeist Fellows interweave their research at HZB

    Two Freigeist Fellows are conducting research at the HZB Institute for Methods of Material Development through support received fom the Volkswagen Foundation. Theoretical chemist Dr. Annika Bande is modelling fast electron processes, while Dr. Tristan Petit is investigating carbon nanoparticles. Annika Bande has now been awarded an ancillary grant of an additional 150,000 Euros from the Volkswagen Foundation to fund another doctoral student position for three years. The doctoral research will connect the two Freigeist research projects with another.   [...].

  • A section from the crystal lattice of Calcium-chromium oxide showing how the spins are subject to conflicting demands. In this ball-and-stick model, the green and red sticks connecting the atoms (grey and black balls) represent ferromagnetic interactions while the blue sticks represent anti-ferromagnetic interactions. (Credit: HZB)25.07.2016

    Novel state of matter: Observation of a quantum spin liquid

    A novel and rare state of matter known as a quantum spin liquid has been empirically demonstrated in a single crystal of the compound calcium-chromium oxide. What is remarkable about this discovery is that according to conventional understanding, a quantum spin liquid should not be possible in this material. A theoretical explanation for these observations has now also been developed. This work deepens our knowledge of condensed matter and might also be important for future developments in quantum information. These results have been published in Nature Physics.   [...].

  • The illustration shows how iodine (purple) is embedded between the organic layer and the metal, thus reducing adhesion (Credit: IFM, University of Linköping).22.06.2016

    User Community Science: Soft decoupling of organic molecules on metal

    An international team has discovered an elegant way to decouple organic nanosheets grown on metal surfaces. After iodine intercalation, measurements at the synchrotron source BESSY II of Helmholtz-Zentrum Berlin (HZB) showed that a network of organic molecules behave almost as it was free-standing. The strong influence of the metal on the network was reduced. This opens up new ways to transfer organic nanostructures from metal surfaces onto more suitable substrates for molecular electronics. The results have been published in "Angewandte Chemie". [...].

Neutrons

  • ANSTO: Adi Paterson and Simone Richter, HZB: Prof. Anke Kaysser-Pyzalla and Thomas Frederking (Credit: ANSTO)11.11.2016

    HZB and ANSTO have extended their Memorandum of Understanding

    The heads of the HZB and the Australian Nuclear Science and Technology Organisation (ANSTO) recently have considerably extended the Memorandum of Understanding existing between the two institutions since 2015. They intend to further enhance their cooperation particularly in the area of energy materials research. [...].

  • Lithium ions migrate through the electrolyte (yellow) into the layer of crystalline silicon (c-Si). During the charging cycle, a 20-nm layer (red) develops on the silicon electrode adsorbing extreme quantities of lithium atoms (Credit: HZB)08.08.2016

    Lithium-ion batteries: Capacity might be increased by six times

    The capacity of lithium-ion batteries might be increased by six times by using anodes made of silicon instead of graphite. A team from Helmholtz-Zentrum Berlin (HZB) Institute of Soft Matter and Functional Materials has observed for the first time in detail how lithium ions migrate into thin films of silicon. It was shown that extremely thin layers of silicon would be sufficient to achieve the maximal load of lithium.

    [...].

  • A section from the crystal lattice of Calcium-chromium oxide showing how the spins are subject to conflicting demands. In this ball-and-stick model, the green and red sticks connecting the atoms (grey and black balls) represent ferromagnetic interactions while the blue sticks represent anti-ferromagnetic interactions. (Credit: HZB)25.07.2016

    Novel state of matter: Observation of a quantum spin liquid

    A novel and rare state of matter known as a quantum spin liquid has been empirically demonstrated in a single crystal of the compound calcium-chromium oxide. What is remarkable about this discovery is that according to conventional understanding, a quantum spin liquid should not be possible in this material. A theoretical explanation for these observations has now also been developed. This work deepens our knowledge of condensed matter and might also be important for future developments in quantum information. These results have been published in Nature Physics.   [...].

  • Photo: M. Muske/HZB27.06.2016

    Data policy finalized for research data at HZB

    Researchers retain exclusive access to their data for five years.

    The instruments at the large facilities of Helmholtz-Zentrum Berlin produce large quantities of raw data. These data must be stored long-term and should also be openly accessible. The rules for handling such data at HZB are now defined in its data policy. The management finalized the policy on June 14th, 2016. It stipulates that, as a rule, raw data should become openly accessible after five years.

    [...].

Photons

  • 17.03.2017

    Innovations for our chemistry lab users: new access rules, better equipment and more support

    In regards to our last newsletter we expressed our gratitude for the large amount of beamtime feedbacks. We have promised to respond to your points of criticism to improve our service and support and we are very glad to inform you that we started our first implementation and brought our user chemistry lab up-to-date.
    [...].

  • The x-ray reflectitivity of the Mo/Si multilayer mirror is changed via a time delayed laserpulse (Credit: HZB).21.11.2016

    Methods at BESSY II: Versatile cross-correlator for ultrafast X-ray experiments

    Particularly in the soft X-ray range experimentalists are lacking a broadband method to correlate ultrashort X-ray and laser pulses in space and time. Only recently, a team from Helmholtz-Zentrum Berlin and the University of Potsdam was able to achieve this by utilizing a standard molybdenum-silicon (Mo/Si) multilayer mirror at the FemtoSpeX facility at BESSY II. They use femtosecond laser pulses to modulate the multilayer period under the Bragg condition on a sub-picosecond up to nanosecond timescale which in turn strongly affects the mirror’s X-ray reflectivity. The presented Mo/Si cross-correlator works for the soft up to the hard X-ray regime as well as for a broad range of laser pump wavelengths (mid-IR to UV) and renders this technique as an easy to implement and versatile timing tool for various synchrotron- and lab-based pump-probe experiments. The results are published in the journal of "Structural Dynamics". [...].

  • Photo: M. Muske/HZB27.06.2016

    Data policy finalized for research data at HZB

    Researchers retain exclusive access to their data for five years.

    The instruments at the large facilities of Helmholtz-Zentrum Berlin produce large quantities of raw data. These data must be stored long-term and should also be openly accessible. The rules for handling such data at HZB are now defined in its data policy. The management finalized the policy on June 14th, 2016. It stipulates that, as a rule, raw data should become openly accessible after five years.

    [...].

  • The illustration shows how iodine (purple) is embedded between the organic layer and the metal, thus reducing adhesion (Credit: IFM, University of Linköping).22.06.2016

    User Community Science: Soft decoupling of organic molecules on metal

    An international team has discovered an elegant way to decouple organic nanosheets grown on metal surfaces. After iodine intercalation, measurements at the synchrotron source BESSY II of Helmholtz-Zentrum Berlin (HZB) showed that a network of organic molecules behave almost as it was free-standing. The strong influence of the metal on the network was reduced. This opens up new ways to transfer organic nanostructures from metal surfaces onto more suitable substrates for molecular electronics. The results have been published in "Angewandte Chemie". [...].

Source

    Events and Dates

    • Prof. Dr. Bernd Rech becomes provisional Scientific Director of the HZB on May 1, 2017 (Photo: HZB).27.04.2017

      Prof. Dr. Bernd Rech becomes provisional Scientific Director of the HZB on May 1, 2017

      Following the succession of long-serving Scientific Director Prof. Anke Kaysser-Pyzalla to President of TU Braunschweig, the Supervisory Board of the Helmholtz-Zentrum Berlin has appointed Prof. Bernd Rech as provisional Scientific Director. He assumes this position as of May 1, 2017. Bernd Rech has headed the Institute for Silicon Photovoltaics at the HZB since 2006 and is highly esteemed worldwide as an expert in renewable energies. [...].

    • 24.04.2017

      Ninth Joint BER II and BESSY II User Meeting

      December 13th-15th, 2017

      Wilhelm-Conrad-Roentgen Campus, Berlin-Adlershof and Lise-Meitner Campus, Berlin-Wannsee [...].

    • Sound artist Gerriet K. Sharma is working on a project inspired by the expansion project BESSY-VSR (Photo: M. Setzpfand/HZB).10.03.2017

      Acoustic sculptures on the theme of BESSY-VSR

      The sound artist Gerriet K. Sharma works on a project inspired by the expansion project BESSY-VSR at HZB. Gerriet K. Sharma is realising the sculpture of acoustic phenomena using icosahedral speakers and a beam-forming application. [...].

    • (Photo: Pixabay)23.01.2017

      Gastronomy and Shops in Adlershof

      Recently we have been asked if we could provide some information about Restaurants and Shops in Adlershof. [...].

    • ANSTO: Adi Paterson and Simone Richter, HZB: Prof. Anke Kaysser-Pyzalla and Thomas Frederking (Credit: ANSTO)11.11.2016

      HZB and ANSTO have extended their Memorandum of Understanding

      The heads of the HZB and the Australian Nuclear Science and Technology Organisation (ANSTO) recently have considerably extended the Memorandum of Understanding existing between the two institutions since 2015. They intend to further enhance their cooperation particularly in the area of energy materials research. [...].

    • Federal Minister of Research Prof. Johanna Wanka with project managers Prof. Robert Schlögl (MPG) and Prof. Simone Raoux (HZB). Photo: HZB/D. Ausserhofer04.11.2016

      EMIL, a new 2000-square-metre laboratory complex, has opened for research into new energy materials

      After three years of construction, the Energy Materials In-Situ Laboratory (EMIL) is now open. The new laboratory complex for researching energy materials, annexed to BESSY II in Berlin-Adlershof, was ceremonially inaugurated with the involvement of the Federal Minister of Research, Johanna Wanka, on October 31, 2016. At the new laboratory, which offers direct access to the brilliant light of the electron storage ring BESSY II, researchers are looking to synthesise and analyse materials for future renewable energy generation. Around 20 million euros were invested in the construction of the laboratory. [...].

    • Up to 250 posters are usually displayed during the Poster Session in the BESSY II storage ring hall.20.09.2016

      Eighth Joint BER II and BESSY II User Meeting 2016

      The Eighth Joint BER II and BESSY II User Meeting will take place from December 7th to Dezember 9th, 2016 in Berlin-Adlershof and Berlin-Wannsee. The User Meeting will bring together more than 400 researchers from all over the world and from different research fields. [...].

    • 16.09.2016

      Novelties from the HZB User Coordination Team - Our service to the users

      The HZB User Coordination Team offers several services to make your stay at our research facilities BER II and BESSY II more pleasant. [...].

    • Bruker D8 Advance diffractometer for energy dispersive thin film analysis with 9-fold sample changer (Photo: X-ray CoreLab/HZB)11.07.2016

      X-ray CoreLab is now in operation - available for external users beginning in 2017

      From now on all HZB scientists as well as visiting scientists can use the X-ray diffractometry equipment at the X-ray CoreLab. External scientists can apply for instrument time and use the X-ray CoreLab beginning in 2017. [...].

    • 01.07.2016

      HEMF - Helmholtz Energy Materials Foundry

      The Helmholtz Energy Materials Foundry (HEMF) is envisaged as a new large-scale collaborative research-and-development platform dedicated to the synthesis of new and improved materials for energy conversion and storage applications. It will consist of state-of-the-art laboratories and equipment to be added to existing facilities that are distributet over six participating Helmholtz Centres. [...].

    • Dr. Catherine Dubourdieu is an internationally recognised expert in the field of functional oxides.12.04.2016

      Dr. Catherine Dubourdieu sets up the institute “Functional Oxides for Energy-Efficient Information Technology” at the HZB

      The Helmholtz-Zentrum Berlin (HZB) is boosting its energy materials research and setting up a new institute. Through the Helmholtz Recruitment Initiative, the HZB has gained renowned researcher Catherine Dubourdieu as Institute Director. In the newly established institute "Functional Oxides for Energy-Efficient Information Technology", she is researching into thin films of metal oxides that make especially promising candidates for information technologies of the future. Dubourdieu formerly worked at the institute "Nanotechnologies de Lyon" of the CNRS and has been at the HZB since April 11, 2016. 

      [...].