SKM 2023 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster Session I
CPP 17.41: Poster
Monday, March 27, 2023, 18:00–20:00, P3
Active layer aging for the fabricating durable perovskite solar cells with improved reproducibility — •Yuqin Zou1 and Peter Müller-Buschbaum1,2 — 1TUM School of Natural Sciences, Chair for Functional Materials, Garching — 2MLZ, TUM, Garching
Solution processing of semiconductors is a highly promising approach for the fabrication of cost-effective electronic and optoelectronic devices. Although hybrid perovskites have potential in various device applications, challenges remain in the development of high-quality materials with simultaneously improved processing reproducibility and scalability. Here, we report a facile and practical aging treatment method to modulate crystal growth over the entire film to produces homogeneous films with high crystallinity, low defects and full-coverage. The resulting aged perovskite solar cells (PSCs) exhibits superior electronic properties: fast charge carrier transport, efficient charge extraction and low carrier recombination. The average power conversion efficiency (PCE) of MAPI-based PSCs greatly increase from 16.38% to 17.26% with high reproducibility. In addition, the aged PSCs maintain 80% of their initial PCE after 18 hours of operation under ambient and vacuum conditions, respectively, which illustrates their feasibility in scalable fabrication. Aging treatment effectively prevents the uneven performance and low reproducibility of PSCs arising from variations in the preparation environment (temperature, humidity). Thus, this method opens a new and effective avenue to improving the quality of perovskite films and photovoltaic devices in a scalable and reproducible manner.