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High efficient inverted polymer solar cells by surface treatment of zinc oxide

Title
High efficient inverted polymer solar cells by surface treatment of zinc oxide
Authors
Woo, SunghoKim, Wook HyunLyu, Hong-Kun
DGIST Authors
Woo, Sungho; Kim, Wook Hyun; Lyu, Hong-Kun
Issue Date
2013
Citation
, 58(11), 131-136
Type
Conference
Article Type
Conference Paper
ISSN
1938-5862
Abstract
In this work, we report on the enhanced power conversion efficiency (PCE) of inverted polymer solar cells (I-PSCs) that use a surface treatment of ZnO electron transporting layer by benzoic acid derivatives. A thin SAM layers of 4-methoxybenzoic acid (mBA) or 4′-methoxybiphenyl-4-carboxylic acid (mBPCA), prepared by spin-coating, on top of ZnO, was used to induce a surface dipole at the ZnO resulted in decrease of series resistance and finally simultaneous enhancements of the short-circuit current density and fill factor. The PCE of I-PSCs based on mBA and mBPCA treated ZnO reaches 6.74 and 7.11%, respectively, while the PCE of the device based on untreated ZnO is 6.52% for PTB7:PC71BM based bulk-heterojunction active layer systems. Our results provide a promising approach to improve the performance of highly efficient inverted polymer solar cells. © The Electrochemical Society.
URI
http://hdl.handle.net/20.500.11750/3798
DOI
10.1149/05811.0131ecst
Publisher
Electrochemical Society Inc.
Related Researcher
Files:
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Collection:
Division of IoT∙Robotics Convergence Research2. Conference Papers
Intelligent Devices and Systems Research Group2. Conference Papers


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