[24a-E206-1~13] 12.5 Organic solar cells

[24a-E206-11] Performance Evaluation of Mixed-Halide Perovskite Solar Cells with Monolayer Hole Transporting Layers

〇Richard Murdey¹, Yasuhisa Ishikura², Yuko Matsushige¹, Minh Anh Truong¹, Tomoya Nakamura¹, Atsushi Wakamiya¹ (1.Kyoto Univ., 2.Enecoat Technologies)

Keywords:perovskite solar cell, stability, maximum power point tracking

p-i-n solar cells fabricated using a MeO-2PACz monolayer as the hole transport layer are shown to have excellent operational stability in 100 h maximum power point tracking tests. The performance of two mixed halide perovskite materials, narrow bandgap Cs_0.05FA_0.80MA_0.15PbI_2.75Br_0.25 and wide bandgap Cs_0.05FA_0.80MA_0.15PbI₂Br, are evaluated under both AM1.5G and simulated ambient lighting conditions. Under AM1.5G, the low bandgap material achieves a stable operating efficiency of 19%. Devices fabricated with the wide bandgap material experience transient effects following exposure to strong light that lowers the responsivity. They show superior output stability in low light, however, achieving a stable operating efficiency of 31% under 250 μW/cm² white LED illumination.