Inorganic material passivation of defects toward efficient perovskite solar cells

Wenjing Qi; Xin Zhou; Jiale Li; Jian Cheng; Yuelong Li; Min Jae Ko; Ying Zhao; Xiaodan Zhang

doi:10.1016/j.scib.2020.07.017

Inorganic material passivation of defects toward efficient perovskite solar cells

Sci Bull (Beijing). 2020 Dec 15;65(23):2022-2032. doi: 10.1016/j.scib.2020.07.017. Epub 2020 Jul 11.

Authors

Wenjing Qi¹, Xin Zhou¹, Jiale Li¹, Jian Cheng¹, Yuelong Li², Min Jae Ko³, Ying Zhao¹, Xiaodan Zhang¹

Affiliations

¹ Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Solar Energy Research Center, Nankai University, Tianjin 300350, China; Collaborative Innovation Center of Chemical Science and Engineering, Renewable Energy Conversion and Storage Center of Nankai University, Tianjin 300072, China.
² Institute of Photoelectronic Thin Film Devices and Technology, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Solar Energy Research Center, Nankai University, Tianjin 300350, China; Collaborative Innovation Center of Chemical Science and Engineering, Renewable Energy Conversion and Storage Center of Nankai University, Tianjin 300072, China. Electronic address: lyl@nankai.edu.cn.
³ Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea.

PMID: 36659061
DOI: 10.1016/j.scib.2020.07.017

Abstract

Surface passivation with organic materials is one of the most effective and popular strategies to improve the stability and efficiency of perovskite solar cells (PSCs). However, the secondary bonding formed between organic molecules and perovskite layers is still not strong enough to protect the perovskite absorber from degradation initialized by oxygen and water attacking at defects. Recently, passivation with inorganic materials has gradually been favored by researchers due to the effectiveness of chemical and mechanical passivation. Lead-containing substances, alkali metal halides, transition elements, oxides, hydrophobic substances, etc. have already been applied to the surface and interfacial passivation of PSCs. These inorganic substances mainly manipulate the nucleation and crystallization process of perovskite absorbers by chemically passivating defects along grain boundaries and surface or forming a mechanically protective layer simultaneously to prevent the penetration of moisture and oxygen, thereby improving the stability and efficiency of the PSCs. Herein, we mainly summarize inorganic passivating materials and their individual passivation principles and methods. Finally, this review offers a personal perspective for future research trends in the development of passivation strategies through inorganic materials.

Keywords: Defect healing; Inorganic materials passivation; Perovskite solar cells; Stability.

Publication types

Review