A Novel Thiophene Derivative-based Conjugated Polymer for Polymer Solar Cells with High Open-circuit Voltage  

作　　者：谌烈 沈星星 陈义旺 

机构地区：[1]Department of Chemistry/Institute of Polymers,Nanchang University,Nanchang,Jiangxi 330031,China [2]Jiangxi Key Laboratory for New Energy Chemistry,Nanchang University,Nanchang,Jiangxi 330031,China

出　　处：《Chinese Journal of Chemistry》2012年第9期2219-2224,共6页中国化学（英文版）

摘　　要：A novel D-A alternative conjugated polymer PBDTDMCT containing benzo[1,2-b：4,5-b＇]dithiophene （BDT） and dimethyl thiophene-3,4-dicarboxylate （DMCT）, was designed and synthesized by Stille cross-coupling reaction. The copolymer exhibited excellent solubility and good thermal stability. The optical band gap determined from the onset of absorption of the polymer film was 2.10 eV. By incorporation of the ester groups into the polymer side chain, the HOMO level of polymer PBDTDMT was tuned to be deep-lying （--5.65 eV）. Open-circuit voltage of polymer solar cells constructed based on PBDTDMT and [6,6]-phenyl-CTwbutyric acid methyl ester （PCTIBM） can be tuned to achieve values as high as ca. 1.0 V.A novel D-A alternative conjugated polymer PBDTDMCT containing benzo[1,2-b：4,5-b＇]dithiophene （BDT） and dimethyl thiophene-3,4-dicarboxylate （DMCT）, was designed and synthesized by Stille cross-coupling reaction. The copolymer exhibited excellent solubility and good thermal stability. The optical band gap determined from the onset of absorption of the polymer film was 2.10 eV. By incorporation of the ester groups into the polymer side chain, the HOMO level of polymer PBDTDMT was tuned to be deep-lying （--5.65 eV）. Open-circuit voltage of polymer solar cells constructed based on PBDTDMT and [6,6]-phenyl-CTwbutyric acid methyl ester （PCTIBM） can be tuned to achieve values as high as ca. 1.0 V.

关 键 词：conjugated polymers HOMO energy level polymer solar cells open-circuit voltage 

分 类 号：O631.24[理学—高分子化学] O626.12[理学—化学]