ICCAS OpenIR
A Copolymer of Benzodithiophene with TIPS Side Chains for Enhanced Photovoltaic Performance
Shi, Qinqin3; Fan, Haijun3; Liu, Yao3; Hu, Wenping; Li, Yongfang; Zhan, Xiaowei1
2011-12-13
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume44Issue:23Pages:9173-9179
AbstractA new conjugated copolymer PBDTTT-TIPS containing thiazolothiazole acceptor unit and triisopropylsilylethynyl (TIPS)-functionalized benzodithiophene donor unit was synthesized by Pd-catalyzed Stifle coupling and compared with its alkoxy-substituted analogue PBDTTT-C12. PBDTTT-TIPS exhibits decomposition temperature of 377 C, absorption maximum of 598 cm, HOMO level of -5.3 eV, and hole mobility as high as 1.2 x 10(-3) cm(2) V-1 s(-1). Without any post-treatments, polymer solar cells based on the blend of PBDTTT-TIPS and PC71BM exhibited power conversion efficiency as high as 4.33%, which is 2 times that for device based on the PBDTTT-C12:PC71BM blend. TIPS and C12 side chains exhibit a little impact on absorption, HOMO level, and hole mobility of the polymers, but they significantly influence blend film morphology and photovoltaic performance. TIPS side chains induces excellent compatibility between PBDTTT-TIPS and PC71BM, and the PBDTTT-TIPS:PC71BM blend exhibits perfect phase separation scales around 10-20 nm, which is beneficial to charge separation and enhanced efficiency of the device, while C12 side chains leads to large phase separation, which is responsible for the lower efficiency.
DOI10.1021/ma2019683
Indexed BySCI
Language英语
WOS IDWOS:000297604200013
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:54[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/73618
Collection中国科学院化学研究所
Corresponding AuthorZhan, Xiaowei
Affiliation1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China
3.Grad Univ, Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Shi, Qinqin,Fan, Haijun,Liu, Yao,et al. A Copolymer of Benzodithiophene with TIPS Side Chains for Enhanced Photovoltaic Performance[J]. MACROMOLECULES,2011,44(23):9173-9179.
APA Shi, Qinqin,Fan, Haijun,Liu, Yao,Hu, Wenping,Li, Yongfang,&Zhan, Xiaowei.(2011).A Copolymer of Benzodithiophene with TIPS Side Chains for Enhanced Photovoltaic Performance.MACROMOLECULES,44(23),9173-9179.
MLA Shi, Qinqin,et al."A Copolymer of Benzodithiophene with TIPS Side Chains for Enhanced Photovoltaic Performance".MACROMOLECULES 44.23(2011):9173-9179.
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