Polythiophenes with carboxylate side chains and vinylene linkers in main chain for polymer solar cells
文献类型：期刊论文
| 作者 | Wang, Qi1; Dong, Xin2; He, Mu2; Li, Miaomiao1; Tian, Hongkun2; Liu, Jun2; Geng, Yanhou1,3 |
| 刊名 | POLYMER
 |
| 出版日期 | 2018-03-28 |
| 卷号 | 140页码:89-95 |
| ISSN号 | 0032-3861 |
| 关键词 | Polythiophene Carboxylate Polymer Solar Cells |
| DOI | 10.1016/j.polymer.2018.02.035 |
| 英文摘要 | Two polythiophenes with carboxylate side chains and vinylene linkers in conjugated backbones, i.e., poly [5,5'-(E)-bis(2-hexyldecyl)-2,2'-(ethene-1,2-diyl) bis(thiophene-3-carboxylate)-alt-5,5'-2,2'-bithio-phene] (PBT) and poly[5,5'-(E)-bis(2-hexyldecyl)-2,2'-(ethene-1,2-diyl) bis(thiophene-3-carboxylate)alt-5,5'-thieno[3,2-b] thiophene] (PTT), were synthesized and characterized. Compared to poly(3-hexylthiophene) (P3HT), both polymers displayed deeper HOMO energy levels caused by the introduction of the electron-withdrawing carboxylate group and lower band gaps and shorter pi-pi stacking distances (ca. 3.5 angstrom) due to the incorporation of vinylene linkers in the conjugated backbones. Polymer PBT possesses greater self-organization ability and thereby more ordered intermolecular packing in solid state. Consequently, organic field-effect transistors (OFETs) based on PBT showed a hole mobility of 0.24 cm(2) V(-1)s(-1), much higher than that (0.073 cm(2) V(-1)s(-1)) of PTT. Polymer solar cells (PSCs) with the two polymers as donor materials and [6,6]-phenyl-C-71-butyric acid methyl ester (PC71BM) as acceptor material were fabricated, and both PBT-and PTT-based PSCs showed open circuit voltage (V-oc) above 0.8 V. Owing to the better hole transport property and more ordered nano-fibrillar film morphology, PBT-based PSCs exhibited a superior photovoltaic performance with power conversion efficiency (PCE) of 6.25%, higher than that of PTT-based PSCs (PCE = 5.53%). This study indicates that simultaneously introducing electron-withdrawing carboxylate in side chains and vinylene linkers in conjugated backbones could efficiently tune the energy levels and enhance the pi-pi interactions between conjugated backbones. (C) 2018 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000428029700010 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/45861]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Miaomiao; Geng, Yanhou |
| 作者单位 | 1.Tianjin Univ, Sch Mat Sci & Engn, Tianjin 300072, Peoples R China 2.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China 3.Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin Key Lab Mol Optoelect Sci, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qi,Dong, Xin,He, Mu,et al. Polythiophenes with carboxylate side chains and vinylene linkers in main chain for polymer solar cells[J]. POLYMER,2018,140:89-95. |
| APA | Wang, Qi.,Dong, Xin.,He, Mu.,Li, Miaomiao.,Tian, Hongkun.,...&Geng, Yanhou.(2018).Polythiophenes with carboxylate side chains and vinylene linkers in main chain for polymer solar cells.POLYMER,140,89-95. |
| MLA | Wang, Qi,et al."Polythiophenes with carboxylate side chains and vinylene linkers in main chain for polymer solar cells".POLYMER 140(2018):89-95. |
入库方式： OAI收割
来源：化学研究所
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