[7a-A501-1~11] 12.5 Organic solar cells

▲ [7a-A501-11] Multiple monovalent cation for lead/tin mixed perovskite solar cells

〇(P)Gaurav Kapil¹, Kengo Hamada², Yuhei Ogomi², Takeru Bessho¹, Takumi Kinoshita¹, Qing Shen³, Taro Toyoda³, Takurou N. Murakami⁴, Hiroshi Segawa¹, Shuzi Hayase² (1.University of Tokyo, 2.Kyu. Inst. of Tech., 3.Uni. of Elec. Comm., 4.AIST)

Keywords:Multiple cation, Sn/Pb, Perovskite Solar cells

One of the approaches to improve the efficiency and stability of perovskite solar cells is to use the mixture of monovalent cations such as cesium(Cs+), formamidinium [(CH₃(NH₂)₂⁺, FA⁺], methylammonium [(CH₃NH₃)⁺, MA⁺] etc. on the A position of ABX₃ perovskite crystal structure [1]. Sn based solar cell gives an alternative to Pb free solar cells to reduce the toxicity concern [2]. But 100% Sn based perovskite solar cells showed poor efficiencies so far. Hence, in the work we proposed Sn/Pb perovskite solar cells by combining with multiple monovalent cation to evaluate the stability and efficiency.
Reference
1. M. Saliba & M. Gratzel et al, Energy & Environ. Sci., 2016, 9, 1989-1997.
2. Y. Ogomi & S. Hayase et al, J. Phys. Chem. Lett., 2014, 5, 1004-1011.