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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 35, Number 2
BKCSDE 35(2)
February 20, 2014

Title	Enhanced Stability of Organic Photovoltaics by Additional ZnO Layers on Rippled ZnO Electron-collecting Layer using Atomic Layer Deposition
Author	Kwang-Dae Kim, Dong Chan Lim, Myung-Geun Jeong, Hyun Ook Seo, Bo Yeol Seo, Joo Yul Lee, Youngsup Song, Shinuk Cho, Jae-Hong Lim, Young Dok Kim
Keywords	Organic photovoltaic, ZnO, Surface defect, Stability, Atomic layer deposition
Abstract	We fabricated organic photovoltaic (OPV) based on ZnO ripple structure on indium tin oxide as electroncollecting layers and PTB7-F20 as donor polymer. In addition, atomic layer deposition (ALD) was used for preparing additional ZnO layers on rippled ZnO. Addition of 2 nm-thick ALD-ZnO resulted in enhanced initial OPV performance and stability. Based on photoluminescence results, we suggest that ALD-ZnO layers reduced number of surface defect sites on ZnO, which can act as electron-hole recombination center of OPV, and increased resistance of ZnO towards surface defect formation.
Page	353 - 356
Full Text	PDF

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