標題: Effects of thiophene units on substituted benzothiadiazole and benzodithiophene copolymers for photovoltaic applications
作者: Ding, Ping
Zou, Yingping
Chu, Cheng-Che
Xiao, Dequan
Hsu, Chain-Shu
應用化學系
Department of Applied Chemistry
關鍵字: copolymerization;NLO;synthesis
公開日期: 5-九月-2012
摘要: Two conjugated copolymers, poly{4,7-[5,6-bis(octyloxy)]benzo(c)(1,2,5)thiadiazole-alt-4,8-di(2-ethylhexyloxyl)benzo[1,2-b:3,4-b]dithiophene} (P1) and poly(2-{5-[5,6-bis(octyloxy)-4-(thiophen-2-yl)benzo(c)(1,2,5)thiadiazol-7-yl] thiophen-2-yl}-4,8-di(2-ethylhexyloxyl)benzo(1,2-b:3,4-b)dithiophene) (P2), composed of benzodithiophene and 5,6-dioctyloxybenzothiadiazole derivatives with or without thiophene units were synthesized via a Stille cross-coupling polymerization reaction. These copolymers are promising for applications in bulk heterojunction solar cells because of their good solubility, proper thermal stability, moderate hole mobility, and low band gap. The photovoltaic properties of these copolymers were investigated on the basis of blends of the different polymer/(6,6)-phenyl-C71-butyric acid methyl ester (PC71BM) weight ratios under AM1.5G illumination at 100 mW/cm2. The device with indium tin oxide/poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate)/P2:PC71BM (1 : 2 w/w)/Ca/Al gave a relatively better photovoltaic performance with a power conversion efficiency of 1.55%. (C) 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
URI: http://hdl.handle.net/11536/16406
ISSN: 0021-8995
期刊: JOURNAL OF APPLIED POLYMER SCIENCE
Volume: 125
Issue: 5
結束頁: 3936
顯示於類別:期刊論文


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