Annealing Effect on (FAPbI₃)1-x(MAPbBr₃)x Perovskite Films in Inverted-Type Perovskite Solar Cells

Lung-Chien Chen; Jia-Ren Wu; Zhong-Liang Tseng; Cheng-Chiang Chen; Sheng Hsiung Chang; Jun-Kai Huang; King-Lien Lee; Hsin-Ming Cheng

doi:10.3390/ma9090747

Annealing Effect on (FAPbI₃)_1-x(MAPbBr₃)_x Perovskite Films in Inverted-Type Perovskite Solar Cells

Materials (Basel). 2016 Sep 3;9(9):747. doi: 10.3390/ma9090747.

Authors

Lung-Chien Chen¹, Jia-Ren Wu², Zhong-Liang Tseng³, Cheng-Chiang Chen⁴, Sheng Hsiung Chang⁵, Jun-Kai Huang⁶, King-Lien Lee⁷, Hsin-Ming Cheng⁸

Affiliations

¹ Department of Electro-Optical Engineering, National Taipei University of Technology, Chung-Hsiao E. Road, Taipei 10608, Taiwan. ocean@ntut.edu.tw.
² Department of Electro-Optical Engineering, National Taipei University of Technology, Chung-Hsiao E. Road, Taipei 10608, Taiwan. t9659012@ntut.org.tw.
³ Department of Electro-Optical Engineering, National Taipei University of Technology, Chung-Hsiao E. Road, Taipei 10608, Taiwan. tw78787788@yahoo.com.tw.
⁴ Research Center for New Generation Photovoltaics, National Central University, Taoyuan 32001, Taiwan. chiang0414@ncu.edu.tw.
⁵ Research Center for New Generation Photovoltaics, National Central University, Taoyuan 32001, Taiwan. shchang@ncu.edu.tw.
⁶ Department of Electro-Optical Engineering, National Taipei University of Technology, Chung-Hsiao E. Road, Taipei 10608, Taiwan. t103658032@ntut.edu.tw.
⁷ Department of Electro-Optical Engineering, National Taipei University of Technology, Chung-Hsiao E. Road, Taipei 10608, Taiwan. kllee@ntut.edu.tw.
⁸ Material and Chemical Research Laboratories, Industrial Technology Research Institute, Hsinchu 31040, Taiwan. smcheng@itri.org.tw.

Abstract

This study determines the effects of annealing treatment on the structure and the optical and electronic behaviors of the mixed (FAPbI₃)_1-x(MAPbBr₃)_x perovskite system. The experimental results reveal that (FAPbI₃)_1-x(MAPbBr₃)_x (x ~ 0.2) is an effective light-absorbing material for use in inverted planar perovskite solar cells owing to its large absorbance and tunable band gap. Therefore, good band-matching between the (FAPbI₃)_1-x(MAPbBr₃)_x and C₆₀ in photovoltaic devices can be controlled by annealing at various temperatures. Accordingly, an inverted mixed perovskite solar cell with a record efficiency of 12.0% under AM1.5G irradiation is realized.

Keywords: FAI; MAPbI3; organic solar cells; perovskite.