Effects of Annealing Conditions on Mixed Lead Halide Perovskite Solar Cells and Their Thermal Stability Investigation

Haifeng Yang; Jincheng Zhang; Chunfu Zhang; Jingjing Chang; Zhenhua Lin; Dazheng Chen; He Xi; Yue Hao

doi:10.3390/ma10070837

Effects of Annealing Conditions on Mixed Lead Halide Perovskite Solar Cells and Their Thermal Stability Investigation

Materials (Basel). 2017 Jul 21;10(7):837. doi: 10.3390/ma10070837.

Authors

Haifeng Yang^{1

2}, Jincheng Zhang^{3

4}, Chunfu Zhang^{5

6}, Jingjing Chang⁷, Zhenhua Lin^{8

9}, Dazheng Chen¹⁰, He Xi¹¹, Yue Hao¹²

Affiliations

¹ Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory, School of Microelectronics, Xidian University, Xi'an 710071, China. faircl@163.com.
² College of Physics and Optoelectronics Technology, Baoji University of Arts and Sciences, Baoji 721016, China. faircl@163.com.
³ Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory, School of Microelectronics, Xidian University, Xi'an 710071, China. jchzhang@xidian.edu.cn.
⁴ Shaanxi Joint Key Laboratory of Graphene, Xidian University, Xi'an 710071, China. jchzhang@xidian.edu.cn.
⁵ Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory, School of Microelectronics, Xidian University, Xi'an 710071, China. cfzhang@xidian.edu.cn.
⁶ Shaanxi Joint Key Laboratory of Graphene, Xidian University, Xi'an 710071, China. cfzhang@xidian.edu.cn.
⁷ Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory, School of Microelectronics, Xidian University, Xi'an 710071, China. jjingchang@xidian.edu.cn.
⁸ Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory, School of Microelectronics, Xidian University, Xi'an 710071, China. zhlin@xidian.edu.cn.
⁹ Shaanxi Joint Key Laboratory of Graphene, Xidian University, Xi'an 710071, China. zhlin@xidian.edu.cn.
¹⁰ Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory, School of Microelectronics, Xidian University, Xi'an 710071, China. dzchen@xidian.edu.cn.
¹¹ Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory, School of Microelectronics, Xidian University, Xi'an 710071, China. hxi@xidian.edu.cn.
¹² Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory, School of Microelectronics, Xidian University, Xi'an 710071, China. yhao@xidian.edu.cn.

Abstract

In this work, efficient mixed organic cation and mixed halide (MA_0.7FA_0.3Pb(I_0.9Br_0.1)₃) perovskite solar cells are demonstrated by optimizing annealing conditions. AFM, XRD and PL measurements show that there is a better perovskite film quality for the annealing condition at 100 °C for 30 min. The corresponding device exhibits an optimized PCE of 16.76% with V_OC of 1.02 V, J_SC of 21.55 mA/cm² and FF of 76.27%. More importantly, the mixed lead halide perovskite MA_0.7FA_0.3Pb(I_0.9Br_0.1)₃ can significantly increase the thermal stability of perovskite film. After being heated at 80 °C for 24 h, the PCE of the MA_0.7FA_0.3Pb(I_0.9Br_0.1)₃ device still remains at 70.00% of its initial value, which is much better than the control MAPbI₃ device, where only 46.50% of its initial value could be preserved. We also successfully fabricated high-performance flexible mixed lead halide perovskite solar cells based on PEN substrates.

Keywords: annealing condition; film quality; perovskite solar cells; thermal stability.