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Extending pi-Conjugation System with Benzene: An Effective Method To Improve the Properties of Benzodithiophene-Based Polymer for Highly Efficient Organic Solar Cells
Wang, Jiuxing1,2; Xiao, Manjun1,3; Chen, Weichao1; Qiu, Meng1; Du, Zhengkun1; Zhu, Weiguo3; Wen, Shuguang1; Wang, Ning1; Yang, Renqiang1,4
2014-11-25
发表期刊MACROMOLECULES
卷号47期号:22页码:7823-7830
摘要

To obtain a polymer based on benzodithiophene (BDT) owning both a largely extended ?-conjugation system and a low-lying highest occupied molecular orbital (HOMO), a polymer (PBDTBzT-DTffBT) containing benzothienyl-substituted BDT is designed and synthesized. Compared with the polymer (PBDTT-DTffBT) based on thienyl-substituted BDT, PBDTBzT-DTffBT exhibits better thermal stabilities, red-shifted absorption spectra, and stronger intermolecular interactions. The HOMO and lowest unoccupied molecular orbital (LUMO) in PBDTBzT-DTffBT are decreased by 0.11 and 0.13 eV, respectively, which should be attributed to the contribution of the electron-withdrawing group benzene. Polymer solar cells (PSCs) based on PBDTBzT-DTffBT and [6,6]-phenyl-C-61-butyric acid methyl ester (PC61BM) exhibit a maximum power conversion efficiency (PCE) of 7.30% with a large open-circuit voltage of 0.90 V under AM 1.5G illumination (100 mW/cm(2)). The PCE is 36% higher than that of the PSCs derived from PBDTT-DTffBT. These findings provide a new approach to design high-performance conjugated polymers for efficient solution-processed PSCs.

文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1021/ma501756p
关键词[WOS]OPEN-CIRCUIT VOLTAGE ; POWER CONVERSION EFFICIENCY ; HIGH-PERFORMANCE ; PHOTOVOLTAIC POLYMERS ; FLUORINATED BENZOTHIADIAZOLE ; PROCESSING ADDITIVES ; DONOR POLYMERS ; BUILDING-BLOCK ; SIDE-CHAINS ; MORPHOLOGY
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:000345552700015
引用统计
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/6324
专题先进有机功能材料研究组
作者单位1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Xiangtan Univ, Minist Educ, Key Lab Environm Friendly Chem & Applicat, Coll Chem, Xiangtan 411105, Peoples R China
4.S China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Guangdong, Peoples R China
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GB/T 7714
Wang, Jiuxing,Xiao, Manjun,Chen, Weichao,et al. Extending pi-Conjugation System with Benzene: An Effective Method To Improve the Properties of Benzodithiophene-Based Polymer for Highly Efficient Organic Solar Cells[J]. MACROMOLECULES,2014,47(22):7823-7830.
APA Wang, Jiuxing.,Xiao, Manjun.,Chen, Weichao.,Qiu, Meng.,Du, Zhengkun.,...&Yang, Renqiang.(2014).Extending pi-Conjugation System with Benzene: An Effective Method To Improve the Properties of Benzodithiophene-Based Polymer for Highly Efficient Organic Solar Cells.MACROMOLECULES,47(22),7823-7830.
MLA Wang, Jiuxing,et al."Extending pi-Conjugation System with Benzene: An Effective Method To Improve the Properties of Benzodithiophene-Based Polymer for Highly Efficient Organic Solar Cells".MACROMOLECULES 47.22(2014):7823-7830.
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