[16p-K405-1~14] 12.5 Organic and hybrid solar cells

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16p-K405-9] Impact of Cooling Rate on Crystallization and Solar Cell Performance of Co-evaporated Perovskite CsPbI₂Br Thin Films

〇(D)SHIJUN SHI^1,2, Masato Sotome^1,2, Kazuteru Nonomura^2,3, Hiroshi Segawa^2,3, Takashi Kondo^1,2 (1.Sch. of Eng., U. Tokyo, 2.RCAST, Univ. of Tokyo, 3.School of Arts and Sciences, Univ. of Tokyo)

Keywords:

perovskite,solar cell,vapor phase co-deposition

This study investigates the impact of cooling rates on the crystallization and photovoltaic performance of CsPbI₂Br perovskite thin films. Using a co-evaporation method, the crystallinity of films cooled at different rates (rapid or slow cooling) was compared. The results showed that slowly cooled films exhibited uniform morphology and flat interfaces, achieving a power conversion efficiency (PCE) of 5.82%, which surpassed the 4.21% efficiency of rapidly cooled films. This research highlights the importance of cooling conditions in improving the crystallization process and solar cell performance.