Glycerol-Doped Poly(3,4-ethylenedioxy-thiophene):Poly(styrene sulfonate) Buffer Layer for Improved Power Conversion in Organic Photovoltaic Devices
- Authors
- Kim, Min Sung; Park, Sung Kyu; Kim, Yong-Hoon; Kang, Jung Won; Han, Jeong-In
- Issue Date
- Aug-2009
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.156, no.10, pp H782 - H785
- Journal Title
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY
- Volume
- 156
- Number
- 10
- Start Page
- H782
- End Page
- H785
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/51192
- DOI
- 10.1149/1.3196243
- ISSN
- 0013-4651
1945-7111
- Abstract
- We investigated the influence of glycerol doping to poly (3,4-ethylenedioxy-thiophene): poly(styrene sulfonate) (PEDOT:PSS) on the power conversion efficiency (PCE) of the bulk heterojunction photovoltaic cells using poly (3-hexylthiophene) and phenyl-C61-butyric acid methyl ester. In particular, a correlation between PCE and changes in the conductivity, surface morphology, contact properties, and work function of glycerol-doped PEDOT:PSS(G-PEDOT:PSS) was investigated as a function of an added glycerol ratio. The PCE was increased from 2.5 to 3.3% by using the optimum glycerol doping ratio. It is believed that the improved PCE of the photovoltaics is possibly due to the increased short-circuit current from the enhanced hole carrying ability as well as the enlarged contact area of the doped buffer layer. (C) 2009 The Electrochemical Society. [DOI: 10.1149/1.3196243] All rights reserved.
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