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Improvement in efficiency of polymer bulk-heterojunction solar cells using modified PEDOT:PSS buffer layers with alcohol derivatives

Authors
Kim, Ju-HyungHuh, Sung-YoonSeo, Soonmin
Issue Date
Apr-2014
Publisher
IOP PUBLISHING LTD
Citation
JAPANESE JOURNAL OF APPLIED PHYSICS, v.53, no.4
Journal Title
JAPANESE JOURNAL OF APPLIED PHYSICS
Volume
53
Number
4
URI
https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/12721
DOI
10.7567/JJAP.53.04ER03
ISSN
0021-4922
Abstract
We demonstrated that the use of modified poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) (PEDOT:PSS) buffer layers with alcohol derivatives between an electrode and a photoactive layer can lead to the improvement in the efficiency of polymer bulk-heterojunction solar cells. Polymer solar cells containing modified PEDOT: PSS layers show significant improvement in power conversion efficiency by up to similar to 59% when compared with a device containing only pristine PEDOT: PSS layers. Conformational and morphological changes in the PEDOT: PSS buffer layer corresponding to the dopant polarity and concentration have strong correlations with the surface roughness and arrangement of PEDOT and PSS, which could explain the behaviors of the polymer bulk-heterojunction solar cells with the modified PEDOT: PSS layers. (C) 2014 The Japan Society of Applied Physics
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