[5p-C19-1~8] New developments on flexible energy harvesting devices

[5p-C19-5] Heterointerface architecture of perovskite solar cells and enhancement of efficiency for SnPb mixed metal perovskite solar cells

〇Shuzi Hayase¹, Shen Qing², Yuhei Ogomi¹, Taro Toyoda², Kenji Yoshino³, Takashi Minemoto⁴ (1.Kyushu Inst. Tech., 2.UEC, 3.Miyazaki Univ., 4.Ritumeikan Univ.)

Keywords:solar cells, perovskite, Sn

Research on the relationship between hetero-interface structure and solar cell efficiency for perovskite (PVK) solar cells is reviewed. The hetero interface includes n-type semiconductor/PVK and p-type semiconductor/PVK. Insertion of passivation layer on each interface enhances these efficiencies because of retardation of charge recombination at the hetero-interfaces. The interface architecture for mixed metal perovskite solar cells consisting of Sn is more serious than that of Pb-PVK solar cells. How the interface affects the Sn-related PVK solar cells is discussed in detail. In addition, recent progress on Sn-related PVK solar cells is reviewed with our results.