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Improved photovoltaic performance of a 2D-conjugated benzodithiophene-based polymer by the side chain engineering of quinoxaline
Fan, Qunping1; Xiao, Manjun1; Liu, Yu1; Su, Wenyan1; Gao, Huishan1; Tan, Hua1; Wang, Yafei1; Lei, Gangtie1; Yang, Renqiang2; Zhu, Weiguo1
2015
发表期刊POLYMER CHEMISTRY
卷号6期号:23页码:4290-4298
摘要To investigate the influence of side chains of quinoxaline on the photovoltaic performances, a novel D-A-type polymer of PBDTDT(Qx-3)-T was synthesized and characterized, in which 5,8-dioctylthienyl substituted benzo[1,2-b: 4,5-b']dithiophene (BDT-T), thiophene (T) and 6,7-dioctyloxy-2,3-diphenylquinoxaline (Qx-3) were used as the donor (D) unit, pi-bridge and acceptor (A) unit, respectively. The resulting polymer exhibited good thermal stability with a high decomposition temperature of 357 degrees C, a low optical bandgap of 1.78 eV with an absorption onset of 696 nm, a low-lying highest occupied molecular orbital (HOMO) energy level of -5.51 eV, and a high carrier mobility of 2.19 x 10(-4) cm(2) V-1 s(-1). Compared to the reported analogues, polymer solar cells (PSCs) based on PBDTDT(Qx-3)-T/PC71BM demonstrated the highest open-circuit voltages (V-oc) up to 0.96 V. The maximum power conversion efficiency (PCE) of 6.9% with a V-oc of 0.94 V, short-circuit current (J(sc)) of 11.28 mA cm(-2) and a fill factor (FF) of 64.7% was obtained with a delicate balance among the above factors for the polymer in PSCs. On the basis of these results, it can be concluded that the appending two octyloxy side chains at 6,7-positions of quinoxaline in the BDT-T-alt-DTQx type polymers would be a feasible approach to improve photovoltaic properties.
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1039/c5py00305a
关键词[WOS]OPEN-CIRCUIT VOLTAGE ; ORGANIC SOLAR-CELLS ; CONJUGATED POLYMERS ; CHARGE-TRANSFER ; COPOLYMERS ; EFFICIENCY ; QUINACRIDONE ; ORIENTATION ; SINGLE ; BENZO
收录类别SCI
语种英语
WOS研究方向Polymer Science
WOS类目Polymer Science
WOS记录号WOS:000355735300012
引用统计
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/6475
专题先进有机功能材料研究组
作者单位1.Xiangtan Univ, Coll Chem, Key Lab Environm Friendly Chem & Applicat, Minist Educ, Xiangtan 411105, Peoples R China
2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
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Fan, Qunping,Xiao, Manjun,Liu, Yu,et al. Improved photovoltaic performance of a 2D-conjugated benzodithiophene-based polymer by the side chain engineering of quinoxaline[J]. POLYMER CHEMISTRY,2015,6(23):4290-4298.
APA Fan, Qunping.,Xiao, Manjun.,Liu, Yu.,Su, Wenyan.,Gao, Huishan.,...&Zhu, Weiguo.(2015).Improved photovoltaic performance of a 2D-conjugated benzodithiophene-based polymer by the side chain engineering of quinoxaline.POLYMER CHEMISTRY,6(23),4290-4298.
MLA Fan, Qunping,et al."Improved photovoltaic performance of a 2D-conjugated benzodithiophene-based polymer by the side chain engineering of quinoxaline".POLYMER CHEMISTRY 6.23(2015):4290-4298.
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