2026-07-28T01:51:16Z https://icatplus.esrf.fr/oaipmh/request

oai:icatplus.esrf.fr:inv/2113933332 2025-05-28T08:40:00.876Z

4.2 EI 10.15151/ESRF-ES-2113933332 Jasmin RETTENMEIER Jasmin Rettenmeier Ekaterina KNESCHAUREK Ekaterina Kneschaurek 0000-0002-0375-3695 Ekaterina KNESCHAUREK Ekaterina Kneschaurek 0000-0002-0375-3695 Sebastian SCHWARTZKOPFF Sebastian Schwartzkopff Sebastian SCHWARTZKOPFF Sebastian Schwartzkopff Niels SCHEFFCZYK Niels Scheffczyk Ross CARTER Ross Carter Ross CARTER Ross Carter Ivan ZALUZHNYY Ivan Zaluzhnyy 0000-0001-5946-2777 Ivan ZALUZHNYY Ivan Zaluzhnyy 0000-0001-5946-2777 Oleg KONOVALOV Oleg Konovalov 0000-0002-0390-5900 Hans MAUSER Hans Mauser Hans MAUSER Hans Mauser Paul ZIMMERMANN Paul Zimmermann 0009-0001-5100-1412 Paul ZIMMERMANN Paul Zimmermann 0009-0001-5100-1412 Niels SCHEFFCZYK Niels Scheffczyk Dmitrii LAPKIN Dmitrii Lapkin Dmitrii LAPKIN Dmitrii Lapkin 0000-0003-0680-8740 Example Institute 2028 Data from large facility measurement 2025-04-29T06:00:00Z/2025-05-05T06:00:00Z 2025-05-05T06:00:00Z I CC-BY-4.0 We will use GIWAXS and GISAXS to understand the structural changes in mixed halide perovskites APbX3 (A=methylammonium, formamidinium, cesium; X=Cl, Br, I). We will track the light-induced segregation of halides in I/Br and Br/Cl mixed perovskites. We will observe the formation of pure phase domains (i.e. I-rich, Br-rich or Cl-rich) and characterize their typical size and time scale over which they appear. We will study the influence of chemical composition and crystal grain size on halide migration. This information will help to improve the stability of the perovskite-based solar cells and give an insight into ion migration in perovskite structures. The samples will be prepared at ESRF using own portable spin coater which was already tested at ID10.