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Cited 41 time in webofscience Cited 41 time in scopus
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3,6-Carbazole incorporated into Poly[9,9-Dioctylfluorene-alt-(Bisthienyl)-Benzothiadiazole]s Improving the Power Conversion Efficiency

Title
3,6-Carbazole incorporated into Poly[9,9-Dioctylfluorene-alt-(Bisthienyl)-Benzothiadiazole]s Improving the Power Conversion Efficiency
Authors
Yuanhe FuHyojung ChaGang-Young LeeByung Joon MoonPark, CEPark, T
POSTECH Authors
Park, CEPark, T
Date Issued
Mar-2012
Publisher
American Chemical Society
Abstract
A novel concept of D-A-type copolymers based on fluorene polymer incorporated with 3,6-carbazole unit enhances the device performance for organic photovoltaic cells. P(F45C5-DTBT), incorporating 5 mol % 3,6-carbazole into P(2,7F-DTBT), shows an almost 2-fold improvement (5.1%) in power conversion efficiency relative to P(2,7F-DTBT) (2.6%). This results is ascribed to the good balance between electron and hole mobilities in the devices (mu(e)/mu(h) similar to 1.8 for P(F45C5-DTBT) vs 152 for P(2,7F-DTBT)), and the formation of a nanoscale morphology in the blend of the copolymer and [6,6]-phenyl C71-butyric acid methyl ester (PC71BM).
Keywords
HETEROJUNCTION SOLAR-CELLS; OPEN-CIRCUIT VOLTAGE; POLYMER; POLYFLUORENES; PERFORMANCE; DEPENDENCE; MORPHOLOGY; COPOLYMER; PROGRESS
URI
http://oasis.postech.ac.kr/handle/2014.oak/16416
DOI
10.1021/MA3002438
ISSN
0024-9297
Article Type
Article
Citation
MACROMOLECULES, vol. 45, no. 7, 2012-03
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박태호PARK, TAI HO
Dept. of Chemical Enginrg
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