New Hybrid Hole Extraction Layer of Perovskite Solar Cells with a Planar p?i?n Geometry

Title
New Hybrid Hole Extraction Layer of Perovskite Solar Cells with a Planar p?i?n Geometry
Authors
박익재박민아김동호박경도김병조손해정고민재이도권박태호신현정박남규정현석김진영
Keywords
perovskite solar cell; p-i-n
Issue Date
2015-12
Publisher
The Journal of Physical Chemistry C
Citation
VOL 119, 27285-27290
Abstract
We report a highly efficient p-i-n type planar perovskite solar cell with a hybrid PEDOT/NiOx hole-extraction layer. It has been found that the perovskite solar cell with a NiOx thin film as a hole-extraction layer generally exhibits lower fill factor compared to the conventionally used PEDOT:PSS thin film, whereas it shows higher photocurrent and photovoltage. The fill factor of the NiOx-based perovskite solar cell can be significantly improved by treating the NiOx surface with a dilute PEDOT solution. The photoluminescence quenching study and impedance spectroscopic (IS) analysis have revealed that the hole injection at the perovskite/NiOx interface is significantly facilitated with the PEDOT treatment, which should lead to the increased fill factor. As a result, the p-i-n type planar perovskite solar cell with the new hybrid hole-extraction layer exhibits a high conversion efficiency of 15.1% without the hysteresis effect.
URI
http://pubs.kist.re.kr/handle/201004/58298
ISSN
19327447
Appears in Collections:
KIST Publication > Article
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