Stefan Paetel

TL;DR: In this article, the authors presented a new certified world record efficiency of 20.1 and 20.3% for thin-film solar cells for the first time and analyzed the characteristics of solar cells on such a performance level and demonstrate a high degree of reproducibility.

TL;DR: In this article, the authors outline similarities and differences between polycrystalline thin-film photovoltaic materials from both the materials and the industrial point of view and address the materials characteristics and device concepts for each technology, including a description of recent developments that have led to very high efficiency achievements.

TL;DR: In this article, the formation, nature, and consequences of gallium gradients in CIGS solar cells were analyzed in real time during a rapid selenization process by in situ X-ray measurements.

TL;DR: In this paper, a new chemical bath deposition kinetics for the zinc sulfide oxide Zn(S,O) buffer layer as used in CIGS-based solar cells is reported.

TL;DR: In this article, the analytical description of high-efficiency Cu(In,Ga)Se 2 -based solar cells produced with a static co-evaporation process is presented, where classic quality markers such as grain morphology, composition, vertical compositional gradings, and grain orientation in these cells are discussed.