Near-infrared small molecule acceptors based on 4H-cyclopenta [1,2-b:5,4-b']dithiophene units for organic solar cells
文献类型：期刊论文
| 作者 | Wang, Kaili1,2; Wei, Hongwei1; Li, Zhefeng1; Lu, Shirong2
|
| 刊名 | DYES AND PIGMENTS
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 196页码:6 |
| 关键词 | Organic solar cell Non-fullerene Near-infrared A-D-A structure Easy synthesis Posttreatment |
| ISSN号 | 0143-7208 |
| DOI | 10.1016/j.dyepig.2021.109801 |
| 通讯作者 | Li, Zhefeng(zhefeng@cqu.edu.cn) ; Lu, Shirong(lushirong@cigit.ac.cn) |
| 英文摘要 | Two small-molecule non-fullerene acceptors (NFAs) CPDT-Me-2Eh and CPDT-4Cl-2Eh based on 4H-cyclopenta [1,2-b:5,4-b '] dithiophene as the electron-donating unit 2-(5/6-methyl-3-oxo-2,3-dihydro-1H-inden-1-ylidene) malononitrile and 2-(5,6-dichloro-3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile as the end group respectively were developed. Compared with CPDT-Me-2Eh, CPDT-4Cl-2Eh possesses red-shift absorption spectrum, lower HOMO and LUMO energy level, and higher electron mobility. Non-fullerene polymer solar cells based on PBDB-T: CPDT-4Cl-2Eh gave a power conversion efficiency (PCE) of 7.52%, with a fill factor (FF) of 64.46%, and a short-circuit current (Jsc) of 16.90 mA/cm2. As contrast, the cell based on PBDB-T: CPDT-Me-2Eh got a PCE value of 4.39%. Our results indicate that the small molecule acceptor containing the CPDT core can effectively extend the absorption spectrum to the near-infrared (NIR) region by chlorination of the capping group. Our work provides an easy routine to broaden the field of new NIR NFAs with high PCE based on nonfullerene OSCs. |
| 资助项目 | National Natural Science Foundation of China[61805245] ; National Natural Science Foundation of China[21702202] |
| WOS研究方向 | Chemistry ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000696926100007 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/14272]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Li, Zhefeng; Lu, Shirong |
| 作者单位 | 1.Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Kaili,Wei, Hongwei,Li, Zhefeng,et al. Near-infrared small molecule acceptors based on 4H-cyclopenta [1,2-b:5,4-b']dithiophene units for organic solar cells[J]. DYES AND PIGMENTS,2021,196:6. |
| APA | Wang, Kaili,Wei, Hongwei,Li, Zhefeng,&Lu, Shirong.(2021).Near-infrared small molecule acceptors based on 4H-cyclopenta [1,2-b:5,4-b']dithiophene units for organic solar cells.DYES AND PIGMENTS,196,6. |
| MLA | Wang, Kaili,et al."Near-infrared small molecule acceptors based on 4H-cyclopenta [1,2-b:5,4-b']dithiophene units for organic solar cells".DYES AND PIGMENTS 196(2021):6. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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