[8a-E201-1~11] 12.5 Organic, Perovskite, and hybrid solar cells

10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[8a-E201-6] Angle-Resolved X-ray Photoelectron Spectroscopy Study of Concentration Profile of Fullerene in a Perovskite Layer

〇Koki Sawai¹, Masato Iwasawa², Hiroyuki Yoshida^1,3 (1.Chiba Univ., 2.Nissan Chem. Corp., 3.Chiba Univ. MCRC)

Keywords:

Perovskite Solar Cells,Angle-Resolved X-ray Photoelectron Spectroscopy,Fullerene

We have evaluated the penetration structure of C₆₀ into CH₃NH₃PbI₃ layers, which is used as electron-collecting layers in p-i-n perovskite solar cells, by UPS, MAES, SEM, and GCIB-SIMS. In this study, for a triple-cation perovskite, we estimated the concentration profile of C₆₀ based on the intensity analysis of ARXPS. The results showed that, as in CH₃NH₃PbI₃, C₆₀ penetrated into the perovskite film over time and was mainly located just beneath the surface.