Published in
Royal Society of Chemistry, Journal of Materials Chemistry A: materials for energy and sustainability, 20(4), p. 7943-7949
DOI: 10.1039/c6ta00679e
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Enhancing the planar heterojunction perovskite solar cell performance through tuning the precursor ratio
Journal article published in 2016 by
Jingjing Chang 
,
Hai Zhu,
Juanxiu Xiao ,
Furkan Halis Isikgor,
Zhenhua Lin,
Yue Hao,
Kaiyang Zeng ,
Qing-Hua Xu,
Jianyong Ouyang
,
Hai Zhu,
Juanxiu Xiao ,
Furkan Halis Isikgor,
Zhenhua Lin,
Yue Hao,
Kaiyang Zeng ,
Qing-Hua Xu,
Jianyong Ouyang
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Abstract
The presence of excess PbI2 can affect the structure of perovskites and photovoltaic performance of perovskite solar cells. Increased open-circuit voltage could be achieved by introducing proper PbI2. However, shorter carrier lifetime and increased recombination and resistance were observed when an excess of PbI2 was used.