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

Authors
Park, IJ (Park, Ik Jae)Park, MA (Park, Min Ah)Kim, DH (Kim, Dong Hoe)Park, GD (Park, Gyeong Do)Kim, BJ (Kim, Byeong Jo)Son, HJ (Son, Hae Jung)Ko, MJ (Ko, Min Jae)Lee, DK (Lee, Doh-Kwon)Park, T (Park, Taiho)Shin, H (Shin, Hyunjung)Park, NG (Park, Nam-Gyu)Jung, HS (Jung, Hyun Suk)Kim, JY (Kim, Jin Young)...Mor
Issue Date
Dec-2015
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY C, v.119, no.49, pp 27285 - 27290
Pages
6
Journal Title
JOURNAL OF PHYSICAL CHEMISTRY C
Volume
119
Number
49
Start Page
27285
End Page
27290
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147094
DOI
10.1021/acs.jpcc.5b09322
ISSN
1932-7447
1932-7455
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.
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Ik Jae, Park
첨단소재·전자융합공학부 (신소재물리전공)
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