Journal
OPTICAL MATERIALS EXPRESS
Volume 7, Issue 7, Pages 2150-2160Publisher
Optica Publishing Group
DOI: 10.1364/OME.7.002150
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Funding
- National Natural Science Foundation of China (NSFC) [51571094, 51431006]
- National Key Research Program of China [2016YFA0201002]
- Guangdong province funding [2016KCXTD009, 2014B090915005, 2014A0303134470]
- Program for Chang Jiang Scholars and Innovative Research Teams in Universities Project [IRT13064]
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We demonstrate an environment-friendly solvent treatment that leads to a dramatic performance improvement of perovskite solar cells, with power conversion efficiency as high as 18%, with good stability. The solvent not only improves perovskite film morphology and crystallinity, but also, at proper growth conditions, leads to the formation of a self-induced textured structure on a dense layer; this increases the interface area between the perovskite active layer and the hole transport layer and thus improves photo generated current density. These results may open a new path to low-cost and high efficiency perovskite solar cells. (C) 2017 Optical Society of America
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