Issue 1, 2016

PbCl2-assisted film formation for high-efficiency heterojunction perovskite solar cells

Abstract

In this work, PbCl2 is used as an additive to assist organolead trihalide perovskite film formation in a two-step sequential deposition process. PbCl2 inhibits PbI2 crystallization and contributes to the full conversion of PbI2 and enhanced perovskite film morphology control. Cl incorporation into the perovskite improves charge transport within the film, as confirmed by the resulting prolonged photoluminescence lifetime observed. A reaction temperature of approximately 50 °C between the PbI2/PbCl2 film and CH3NH3I isopropanol solution is essential for synthesizing high-performance perovskite solar cells. Addition of PbCl2 results in a perovskite solar cell energy efficiency of 14% and achieves an average efficiency enhancement of approximately 30% compared with that obtained from the control group.

Graphical abstract: PbCl2-assisted film formation for high-efficiency heterojunction perovskite solar cells

Supplementary files

Article information

Article type
Paper
Submitted
03 Nov 2015
Accepted
14 Dec 2015
First published
16 Dec 2015

RSC Adv., 2016,6, 648-655

Author version available

PbCl2-assisted film formation for high-efficiency heterojunction perovskite solar cells

S. Chen, X. Yu, X. Cai, M. Peng, K. Yan, B. Dong, H. Hu, B. Chen, X. Gao and D. Zou, RSC Adv., 2016, 6, 648 DOI: 10.1039/C5RA23062D

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