Pressure-assisted CH3NH3PbI3 morphology reconstruction to improve the high performance of perovskite solar cells

Junyan Xiao; Yueyong Yang; Xin Xu; Jiangjian Shi; Lifeng Zhu; Songtao Lv; Huijue Wu; Yanhong Luo; Dongmei Li; Qingbo Meng

doi:10.1039/C4TA06700B

Pressure-assisted CH₃NH₃PbI₃ morphology reconstruction to improve the high performance of perovskite solar cells†

Junyan Xiao,^a Yueyong Yang,^a Xin Xu,^a Jiangjian Shi,^a Lifeng Zhu,^a Songtao Lv,^a Huijue Wu,^a Yanhong Luo,^a Dongmei Li^a and Qingbo Meng*^a

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* Corresponding authors

^a Key Laboratory for Renewable Energy (CAS), Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
E-mail: qbmeng@iphy.ac.cn
Fax: +86 10 82649242
Tel: +86 10 82649242

Abstract

The pressure is introduced as a parameter in the post-treat process for perovskite solar cells. Via a hot-pressing method, the rough surface of perovskite film becomes smooth, and the pin-holes can be cured. This modified perovskite morphology can help to improve charge transporting and eliminate recombination in the perovskite solar cells. Moreover, significantly enhanced photovoltaic performances with high PCEs of 10.84% and 16.07% are thus achieved in HTM-free type and spiro-OMeTAD based cells, respectively.

Journal of Materials Chemistry A

Pressure-assisted CH₃NH₃PbI₃ morphology reconstruction to improve the high performance of perovskite solar cells†

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Pressure-assisted CH₃NH₃PbI₃ morphology reconstruction to improve the high performance of perovskite solar cells

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Journal of Materials Chemistry A