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Electron transport layer assisted by nickel chloride hexahydrate for open-circuit voltage improvement in MAPbI₃ perovskite solar cells.

ABSTRACT: SnO₂ is a promising electron transport layer (ETL) material with important applications in planar perovskite solar cells (PSCs). However, electron-hole recombination and charge extraction between SnO₂ and the perovskite layer necessitates further exploration. Nickel chloride hexahydrate (NiCl₂·6H₂O) was introduced into the SnO₂ ETL, which significantly increased the power conversion efficiency (PCE) from 15.49 to 17.36% and the open-circuit voltage (V _OC) from 1.078 to 1.104 V. The improved PCE and V _OC were attributed to the reduced defect states and increased energy level of the conduction band minimum. This work provides new insights into optimizing the V _OC and PCE of PSCs.

SUBMITTER: Dong P

PROVIDER: S-EPMC9082779 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature

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Electron transport layer assisted by nickel chloride hexahydrate for open-circuit voltage improvement in MAPbI3 perovskite solar cells.

Dong Pei P Yuan Shuai S Zhu Dongping D Du Yaxin Y Mu Cheng C Ai Xi-Cheng XC

RSC advances 20220509 22

SnO2 is a promising electron transport layer (ETL) material with important applications in planar perovskite solar cells (PSCs). However, electron-hole recombination and charge extraction between SnO2 and the perovskite layer necessitates further exploration. Nickel chloride hexahydrate (NiCl2·6H2O) was introduced into the SnO2 ETL, which significantly increased the power conversion efficiency (PCE) from 15.49 to 17.36% and the open-circuit ...[more]

PMID: 35541429

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