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An efficient planar-heterojunction solar cell based on wide-bandgap CH₃NH₃PbI₂.₁Br₀.₉ perovskite film for tandem cell application
- Zhu, Weidong, Bao, Chunxiong, Li, Faming, Zhou, Xiaoxin, Yang, Jie, Yu, Tao, Zou, Zhigang
- Chemical communications 2015 v.52 no.2 pp. 304-307
- chemical compounds, chemical reactions, hysteresis, solar cells, solar energy
- A dense and homogenous flat wide-bandgap (1.75 eV) CH₃NH₃PbI₂.₁Br₀.₉ perovskite film was prepared via a facile halide exchange route. The planar-heterojunction solar cell shows an optimal power conversion efficiency of 12.67% with negligible current hysteresis due to the film's large grains and vertically oriented grain boundaries.