Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 24: Hybrid and Perovskite Photovoltaics III
CPP 24.1: Vortrag
Mittwoch, 19. März 2025, 09:30–09:45, H38
Tailored perovskite crystallization by passivation molecule engineering for efficient light-emitting diodes — •Jungui Zhou1,2, Min Zhu1, Yufeng Zhai2, Shouzheng Chen2,4,5, Benedikt Sochor2, Sarathlal Koyiloth Vayalil2, Lei Cai3, Man-Keung Fung1,6, Peter Müller-Buschbaum5, and Stephan V. Roth2,7 — 1Soochow University, Suzhou, China — 2DESY, Hamburg, Germany — 3Shandong normal university, Shandong, China — 4FRM II, Garching, Germany — 5TUM School of Natural Sciences, Garching, Germany — 6MUST, Macau, China — 7KTH Royal Institute of Technology, Stockholm, Sweden
Metal halide perovskite light-emitting diodes (PeLEDs) are regarded as alternative candidates for next-generation display technologies.Various additives have been widely used in perovskite precursor solutions, aiming to improve the as-obtained perovskite film quality through passivating defects and controlling the crystallinity. Although the defect passivation of additives has been intensively investigated, a deep understanding of how additives influence the crystallization process of perovskites during the spin-coating and annealing processes is still lacking. Here, by combining In-situ photoluminescence (PL) and grazing-incidence wide/small-angle X-ray scattering (GIWAXS/GISAXS) techniques, a systematic study of the perovskite film-formation process, perovskite structure, and inner morphology of CsPbBr3 perovskite films modified by various additives is conducted, revealing the influence of additives on the formation of high-quality perovskite films and efficient PeLEDs.
Keywords: In-situ photoluminescence; GIWAXS; GISAXS; Passivation molecules; Crystallization