A Study of Inverted-Type Perovskite Solar Cells with Various Composition Ratios of (FAPbI₃)1-x(MAPbBr₃)x

Lung-Chien Chen; Zong-Liang Tseng; Jun-Kai Huang

doi:10.3390/nano6100183

A Study of Inverted-Type Perovskite Solar Cells with Various Composition Ratios of (FAPbI₃)_1-x(MAPbBr₃)_x

Nanomaterials (Basel). 2016 Oct 13;6(10):183. doi: 10.3390/nano6100183.

Authors

Lung-Chien Chen¹, Zong-Liang Tseng², Jun-Kai Huang³

Affiliations

¹ Department of Electro-Optical Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 10608, Taiwan. ocean@ntut.edu.tw.
² Department of Electro-Optical Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 10608, Taiwan. tw78787788@yahoo.com.tw.
³ Department of Electro-Optical Engineering, National Taipei University of Technology, No. 1, Sec. 3, Chung-Hsiao E. Rd., Taipei 10608, Taiwan. t103658032@ntut.org.tw.

Abstract

This work presents mixed (FAPbI₃)_1-x(MAPbBr₃)_x perovskite films with various composition ratios, x (x = 0-1), which are formed using the spin coating method. The structural, optical, and electronic behaviors of the mixed (FAPbI₃)_1-x(MAPbBr₃)_x perovskite films are discussed. A device with structure glass/indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS)/mixed perovskite/C₆₀/BCP/Ag was fabricated. The mixed perovskite film was an active light-harvesting layer.

Pedot: PSS was a hole transporting layer between the ITO and perovskite. Both C₆₀ and bathocuproine (BCP) were electron transporting layers. MAPbBr₃ was added to FAPbI₃ with a composition ratio of x = 0.2, stabilizing the perovskite phase, which exhibited a uniform and dense morphology. The optimal device exhibited band matching with C₆₀, resulting in a low series resistance (R_sh) and a high fill factor (FF). Therefore, the device with composition (FAPbI₃)_1-x(MAPbBr₃)_x and x = 0.2 exhibited outstanding performance.

Keywords: FAPbI3; MAPbBr3; perovskite; solar cells.