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题名: Design and synthesis of triazoloquinoxaline polymers with positioning alkyl or alkoxyl chains for organic photovoltaics cells
作者: Hai, Jiefeng1;  Yu, Wei2;  Zhao, Baofeng3;  Li, Yang1;  Yin, Liangming1;  Zhu, Enwei1;  Bian, Linyi1;  Zhang, Jian2;  Wu, Hongbin3;  Tang, Weihua1
刊名: POLYMER CHEMISTRY
发表日期: 2014-02-21
DOI: 10.1039/c3py01174g
卷: 5, 期:4, 页:1163-1172
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Polymer Science
研究领域[WOS]: Polymer Science
英文摘要: Four benzodithiophene-triazoloquinoxaline alternating polymers, PBDTT-BTzQx-EH-C1, PBDT-BTzQx-EH-C1, PBDT-BTzQx-EH-C12 and PBDT-BTzQx-C12, have been designed and synthesized to investigate the correlation of alkyl side chains with the opto-electronic properties of the resulting polymers. The introduction of side chains onto the thiophene spacer or quinoxaline unit lowers the highest occupied molecular orbital energy level of the polymers, while excessive chains prevent the polymer backbone from pi-pi stacking and result in a decreased short circuit current and fill factor in a photovoltaic application. The bulk heterojunction cells fabricated by blending PBDTT-BTzQx-EH-C1 with [6.6]-phenyl-C61-butyric acid methyl ester exhibit a best power conversion efficiency (PCE) of 1.40%, with a short-circuit current density of 4.12 mA cm(-2), an open-circuit voltage of 0.62 V and a fill factor of 55%. The device was further optimized to 2.24% PCE by using PFN (5 nm)/Ca (5 nm) as a co-interfacial layer.
关键词[WOS]: POWER-CONVERSION EFFICIENCY ;  OPEN-CIRCUIT VOLTAGE ;  LOW-BANDGAP POLYMER ;  SOLAR-CELLS ;  CONJUGATED POLYMERS ;  RATIONAL DESIGN ;  GAP POLYMERS ;  PERFORMANCE ;  DONOR ;  COPOLYMER
语种: 英语
WOS记录号: WOS:000331343100008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145815
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Nanjing Univ Sci & Technol, Key Lab Soft Chem & Funct Mat, Minist Educ China, Nanjing 210094, Jiangsu, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.S China Univ Technol, Inst Polymer Optoelect Mat & Devices, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

Recommended Citation:
Hai, Jiefeng,Yu, Wei,Zhao, Baofeng,et al. Design and synthesis of triazoloquinoxaline polymers with positioning alkyl or alkoxyl chains for organic photovoltaics cells[J]. POLYMER CHEMISTRY,2014,5(4):1163-1172.
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