Berlin 2018 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 48: Focus: Fundamental Physics of Perovskites I - organized by Lukas Schmidt-Mende and Vladimir Dyakonov
CPP 48.5: Vortrag
Mittwoch, 14. März 2018, 16:15–16:30, C 130
Time-resolved structural analysis of humidity assisted crystallization in printed mesoscopic organometal halide perovskite solar cells — •Oliver Filonik1, Margret Eva Thordardottir1,2, Jenny Lebert2, Stephan Pröller2, Sebastian Weiß2, Jia Haur Lew3, Anish Priyadarshi3, Nripan Mathews3, Peter Müller-Buschbaum2, and Eva M. Herzig4 — 1TU München, Munich School of Engineering, Herzig Group, 85748 Garching, Germany — 2TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching, Germany — 3Energy Research Institute @ NTU (ERI@N), Research Techno Plaza, 637553 Singapore, Singapore — 4Universität Bayreuth, Physikalisches Institut, Herzig Group - Dynamik und Strukturbildung, 95440 Bayreuth, Germany
Organometal halide perovskite based solar cells have emerged as the fastest-advancing photovoltaic technology to date. However, in-depth knowledge about the perovskite crystal formation and optimal processing protocols is still lacking. In the presented work, we fabricate a mesoscopic scaffold comprised of a triple-layer of titania, zirconia and carbon by screenprinting. We further investigate the influence of humidity on the perovskite formation inside the scaffold by time-resolved grazing incidence wide angle X-ray scattering. The experimental data reveal the formation of intermediate solvent phases in solution due to humidity, altering the perovskite formation route. Our results grant us a better understanding of the humidity assisted perovskite crystallization processes and are of key importance for further developments.