Helmholtz Zentrum Berlin
HZB was founded in 2009 by the merger of the former Hahn-Meitner-Institute Berlin GmbH and the BESSY II synchrotron, and is a member of the Helmholtz Foundation. HZB's mission is energy materials research and the operation of two large-scale facilities - BER II and BESSY II - for the international scientific user community and to perform in-house research in the Helmholtz research fields "Matter" and "Energy". HZB has extensive experience in the deposition and processing of thin film materials for applications in photovoltaics, solar fuels, and catalysis, and optical devices. Considerable focus of the research efforts has been on gaining an understanding of growth processes for high quality semiconductor thin films as this is considered a prerequisite for the development of scalable and economic thin film deposition. HZB has also worked extensively on thin device fabrication and analysis including upscaling and prototyping to larger areas. Efficiencies of 19.4% for chalcopyrite-based solar cells and more than 20% for silicon-based heterojunctions have been demonstrated. The main role of HZB in STARCELL will be to apply advanced optoelectronic characterization and analysis methods specifically developed for thin film solar cell development. It will also contribute to the development and analysis of growth processes and help with upscaling and stability tasks.