New Hybrid Hole Extraction Layer of Perovskite Solar Cells with a Planar p-i-n Geometry
- Authors
- Park, Ik Jae; Park, Min Ah; Kim, Dong Hoe; Park, Gyeong Do; Kim, Byeong Jo; Son, Hae Jung; Ko, Min Jae; Lee, Doh-Kwon; Park, Taiho; Shin, Hyunjung; Park, Nam-Gyu; Jung, Hyun Suk; Kim, Jin Young
- 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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