Efficient inverted CsPbI3 inorganic perovskite solar cells achieved by facile surface treatment with ethanolamine

Ning Liu; Zuxiong Xu; Yi Pan; Jianwei Wang; Zhongyu Liu; Jing Zhang; Like Huang; Ziyang Hu; Yuejin Zhu; Xiaohui Liu

doi:10.1039/D3CC02084C

Efficient inverted CsPbI₃ inorganic perovskite solar cells achieved by facile surface treatment with ethanolamine†

Ning Liu,^a Zuxiong Xu,^a Yi Pan,^a Jianwei Wang,^a Zhongyu Liu,^a Jing Zhang,^a Like Huang,^a Ziyang Hu,

^a Yuejin Zhu*^b and Xiaohui Liu

*^a

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* Corresponding authors

^a Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, China
E-mail: liuxiaohui@nbu.edu.cn

^b School of Information Engineering, College of Science and Technology, Ningbo University, Ningbo, China
E-mail: zhuyuejin@nbu.edu.cn

Abstract

The all-inorganic CsPbI₃ perovskite presents promising prospects due to its suitable band gap and nonvolatile nature, while serious nonradiative recombination and unmatched energy level alignment hinder its further developments. Here, a facile and effective surface treatment strategy is proposed to modify the CsPbI₃ surface with ethanolamine, leading to significantly reduced defects, and ameliorated band alignment and morphology. Consequently, a champion power conversion efficiency of 18.41% with improved stability is achieved for the inverted CsPbI₃ solar cells.

Chemical Communications

Efficient inverted CsPbI₃ inorganic perovskite solar cells achieved by facile surface treatment with ethanolamine†

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Efficient inverted CsPbI₃ inorganic perovskite solar cells achieved by facile surface treatment with ethanolamine

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