A Twisted Thieno[3,4-b] thiophene-Based Electron Acceptor Featuring a 14-pi-Electron Indenoindene Core for High-Performance Organic Photovoltaics
文献类型：期刊论文
| 作者 | Xu, Shengjie1; Zhou, Zichun1,2; Liu, Wuyue1,2; Zhang, Zhongbo1,2; Liu, Feng3; Yan, Hongping4; Zhu, Xiaozhang1,2 |
| 刊名 | ADVANCED MATERIALS
 |
| 出版日期 | 2017-11-20 |
| 卷号 | 29期号:43 |
| 关键词 | Indenoindene Nonfullerene Acceptors Organic Solar Cells Power Conversion Efficiency Thieno[3 4-b] Thiophene |
| 英文摘要 | With an indenoindene core, a new thieno[3,4-b] thiophene-based small-molecule electron acceptor, 2,2'-((2Z, 2'Z)-((6,6'-(5,5,10,10-tetrakis(2-ethylhexyl)- 5,10-dihydroindeno[2,1-a] indene-2,7-diyl) bis(2-octylthieno[3,4-b] thiophene-6,4-diyl)) bis(methanylylidene)) bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene)) dimalononitrile (NITI), is successfully designed and synthesized. Compared with 12-pi-electron fluorene, a carbon-bridged biphenylene with an axial symmetry, indenoindene, a carbon-bridged E-stilbene with a centrosymmetry, shows elongated p-conjugation with 14 p-electrons and one more sp(3) carbon bridge, which may increase the tunability of electronic structure and film morphology. Despite its twisted molecular framework, NITI shows a low optical bandgap of 1.49 eV in thin film and a high molar extinction coefficient of 1.90 x 10(5) m(-1) cm(-1) in solution. By matching NITI with a large-bandgap polymer donor, an extraordinary power conversion efficiency of 12.74% is achieved, which is among the best performance so far reported for fullerene-free organic photovoltaics and is inspiring for the design of new electron acceptors. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/39152]  |
| 专题 | 化学研究所_有机固体实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China 3.Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China 4.Stanford Univ, Dept Chem Engn, 443 Via Ortega, Stanford, CA 94305 USA |
| 推荐引用方式 GB/T 7714 | Xu, Shengjie,Zhou, Zichun,Liu, Wuyue,et al. A Twisted Thieno[3,4-b] thiophene-Based Electron Acceptor Featuring a 14-pi-Electron Indenoindene Core for High-Performance Organic Photovoltaics[J]. ADVANCED MATERIALS,2017,29(43). |
| APA | Xu, Shengjie.,Zhou, Zichun.,Liu, Wuyue.,Zhang, Zhongbo.,Liu, Feng.,...&Zhu, Xiaozhang.(2017).A Twisted Thieno[3,4-b] thiophene-Based Electron Acceptor Featuring a 14-pi-Electron Indenoindene Core for High-Performance Organic Photovoltaics.ADVANCED MATERIALS,29(43). |
| MLA | Xu, Shengjie,et al."A Twisted Thieno[3,4-b] thiophene-Based Electron Acceptor Featuring a 14-pi-Electron Indenoindene Core for High-Performance Organic Photovoltaics".ADVANCED MATERIALS 29.43(2017). |
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来源：化学研究所
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