[18a-PB01-1~25] 12.5 Organic and hybrid solar cells

▲ [18a-PB01-22] W-doped ZnO as the Promising Electron-Transport Layer for Efficient and Stable Perovskite Solar Cells

〇(D)Munkhtuul Gantumur¹, M. Shahiduzzaman¹, Masahiro Nakano¹, Makoto Karakawa¹, Jean Michel Nunzi¹, Md. Akhtaruzzaman², Tetsuya Taima¹ (1.Kanazawa Univ., 2.Universiti Kebangsaaan Malaysia Univ.)

Keywords:perovskite solar cells

Perovskite solar cells (PSCs) have been extensively researched, and the power conversion efficiency (PCE) has reached 25.7% [1]. Several metal oxides, such as ZnO, TiO2, and SnO2 are mostly used as the electron transport layer (ETL) in PSCs. Among them, ZnO favors due to its excellent electron mobility [2]. Application of ZnO as ETL in PSCs is still limited due to poor crystallinity of ZnO [3] and large amounts defects [4], resulting in low PCE and stability. Significant efforts have been made using doping or other interface engineering methods to resolve them. Tungsten (W) is one of the candidates for doping ZnO due to the similar ionic radius of Zn2+ (0.074 nm) and W6+ (0.064 nm). In this study, we introduced W-doped ZnO layer as ETL and evaluated their influences of PSCs’ performance and stability.