Manipulation of Cs0.1FA0.9PbI3 crystallization behavior towards efficient carbon-based printable mesoscopic perovskite solar cells

Carbon-based printable mesoscopic perovskite solar cells (MPSCs) have attracted significant attention due to their excellent stability and low manufacturing cost. However, the filling and crystallization behavior of perovskite are difficult to finely manipulate due to the confined space of triple-me...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2024-07, Vol.12 (28), p.17203-17212
Main Authors: Wang, Jinjiang, Wang, Dongjie, Zhang, Yang, Chen, Yiwen, Huang, Tianhuan, Zhu, Wending, Zhang, Zheling, Huang, Yu, Xiong, Jian, Dinghan Xiang, Zhang, Jian
Format: Article
Language:English
Subjects:
Alkylamines
Ammonia
Ammonium
Carbon
Chloride ions
Confined spaces
Crystal defects
Crystal growth
Crystal structure
Crystallization
Crystals
Energy conversion efficiency
Hydrogen bonding
Hydrogen bonds
Ions
Nucleation
Open circuit voltage
Perovskites
Photovoltaic cells
Production costs
Solar cells
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Summary:Carbon-based printable mesoscopic perovskite solar cells (MPSCs) have attracted significant attention due to their excellent stability and low manufacturing cost. However, the filling and crystallization behavior of perovskite are difficult to finely manipulate due to the confined space of triple-mesoporous layers. Herein, an innovative approach is first proposed to effectively manipulate the crystallization behavior of Cs0.1FA0.9PbI3 perovskite in triple-mesoporous layers by introducing propylamine hydrochloride (PACl). Under the manipulation of PACl, the nucleation density of perovskite crystals was significantly increased, the crystallization rate was delayed, thus the compact filling and preferred crystal orientation growth of the perovskite were realized. Simultaneously, ammonium ions (NH3+) and chloride ions (Cl−) of PACl compensate for ionic vacancies in the perovskite through hydrogen bonds and ionic bonds, thus passivating defects. Consequently, MPSCs with PACl achieved a champion power conversion efficiency of 18.06%, and the open circuit voltage of MPSCs increased from 0.940 V to 0.991 V. The work developed a simple method based on alkylamine hydrochloride to finely manipulate the crystallization of the CsFA-based perovskite.
ISSN:2050-7488
2050-7496
DOI:10.1039/d4ta01254b