Issue 22, 2022, Issue in Progress

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 (VOC) from 1.078 to 1.104 V. The improved PCE and VOC were attributed to the reduced defect states and increased energy level of the conduction band minimum. This work provides new insights into optimizing the VOC and PCE of PSCs.

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

Supplementary files

Article information

Article type
Paper
Submitted
24 Mar 2022
Accepted
03 May 2022
First published
09 May 2022
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2022,12, 13820-13825

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

P. Dong, S. Yuan, D. Zhu, Y. Du, C. Mu and X. Ai, RSC Adv., 2022, 12, 13820 DOI: 10.1039/D2RA01913B

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