European Workshop on Nanophotonics for Solar Energy
Participants of the European Workshop on Nanophotonics for Solar Energy. © HZB
On 25 and 26 November 2015, about 40 researchers from seven European countries visited Helmholtz-Zentrum Berlin to attend the “European Workshop on Nanophotonics for Solar Energy”.
On 25 and 26 November 2015, about 40 researchers from seven European countries visited Helmholtz-Zentrum Berlin to attend the “European Workshop on Nanophotonics for Solar Energy”.
During this workshop, current trends and developments in this field were discussed. Further, future opportunities and possibilities for collaboration were explored during discussions, which were initiated with a talk on funding within the European Commission Horizon 2020 program by Dr. David Kolman from the Brussels Office of the Helmholtz Association. The highlight of the workshop was the Distinguished Lecture by Prof. Thomas F. Krauss from the University of York (UK), in which he shared his vision on the future of Photovoltaics and informed us about the latest research results from his group.
This workshop was initiated and organized by Christiane Becker, Sven Burger and Klaus Jäger within the Berlin Joint Lab for Optical Simulations for Energy (BerOSE), which is a collaboration between Helmholtz-Zentrum Berlin, Zuse Institute Berlin and the Free University Berlin.
- Porous Radical Organic framework improves lithium-sulphur batteriesA team led by Prof. Yan Lu, HZB, and Prof. Arne Thomas, Technical University of Berlin, has developed a material that enhances the capacity and stability of lithium-sulphur batteries. The material is based on polymers that form a framework with open pores (known as radical-cationic covalent organic frameworks or COFs). Catalytically accelerated reactions take place in these pores, firmly trapping polysulphides, which would shorten the battery life. Some of the experimental analyses were conducted at the BAMline at BESSY II.
- Shedding light on insulators: how light pulses unfreeze electronsMetal oxides are abundant in nature and central to technologies such as photocatalysis and photovoltaics. Yet, many suffer from poor electrical conduction, caused by strong repulsion between electrons in neighboring metal atoms. Researchers at HZB and partner institutions have shown that light pulses can temporarily weaken these repulsive forces, lowering the energy required for electrons mobility, inducing a metal-like behavior. This discovery offers a new way to manipulate material properties with light, with high potential to more efficient light-based devices.
- Lithium-sulphur batteries with lean electrolyte: problem areas clarifiedUsing a non-destructive method, a team at HZB investigated practical lithium-sulphur pouch cells with lean electrolyte for the first time. With operando neutron tomography, they could visualise in real-time how the liquid electrolyte distributes and wets the electrodes across multilayers during charging and discharging. These findings offer valuable insights into the cell failure mechanisms and are helpful to design compact Li-S batteries with a high energy density in formats relevant to industrial applications.