A Novel BODIPY-Based Low-Band-Gap Small-Molecule Acceptor for Efficient Non-fullerene Polymer Solar Cells
文献类型：期刊论文
| 作者 | Liu, Wenxu1,2; Yao, Jiannian1,2; Zhan, Chuanlang1,2 |
| 刊名 | CHINESE JOURNAL OF CHEMISTRY
 |
| 出版日期 | 2017-12-01 |
| 卷号 | 35期号:12页码:1813-1823 |
| 关键词 | Bodipy Nonfullerene Low Band Gap Small Molecule Acceptor Organic Solar Cell |
| ISSN号 | 1001-604X |
| DOI | 10.1002/cjoc.201700481 |
| 英文摘要 | We report herein an efficient A(1)-CC-A(2)-CC-A(1) type small-molecule 4,4'-difluoro-4-bora-3a,4a-diaza-s- indacene (BODIPY) acceptor (A(1)=BODIPY and A(2)=diketopyrrolopyrrole (DPP)) by following the A-to-A excited electron delocalization via the BODIPY meso-position, the inherent directionality for the excited electron delocalization. The lowest unoccupied molecular orbital (LUMO) delocalizes across over whole the two flanking A(1) and the central A(2), and the highest occupied molecular orbital (HOMO) localizes dominantly on the -CC-DPP-CC- segment. The excited electron upon light excitation of the DPP segment delocalizes over both the BODIPY and DPP segments. The acceptor in chloroform shows an unprecedented plateau-like broad absorption between 550 and 700 nm with a large FWHM value of 195 nm. Upon transition into solid film, the acceptor shows absorption in the whole near ultraviolet-visible-near infrared wavelength region (300-830 nm) with a low band gap of 1.5 eV and a maximum absorptivity of 0.85x10(5) cm(-1). Introduction of the ethynyl spacer between the A(1) and A(2) and the close BODIPY-to-DPP LUMO energy levels are crucial for the excited -electron delocalization across over whole the conjugation backbone. A power conversion efficiency of 6.60% was obtained from the ternary non-fullerene solar cell with PTB7-Th:p-DTS(FBTTh2)(2) (0.5 : 0.5) as the donor materials, which is the highest value among the non-fullerene organic solar cells with BODIPY as the electron acceptor material. |
| 语种 | 英语 |
| WOS记录号 | WOS:000417174900005 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/45191]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhan, Chuanlang |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Photochem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Wenxu,Yao, Jiannian,Zhan, Chuanlang. A Novel BODIPY-Based Low-Band-Gap Small-Molecule Acceptor for Efficient Non-fullerene Polymer Solar Cells[J]. CHINESE JOURNAL OF CHEMISTRY,2017,35(12):1813-1823. |
| APA | Liu, Wenxu,Yao, Jiannian,&Zhan, Chuanlang.(2017).A Novel BODIPY-Based Low-Band-Gap Small-Molecule Acceptor for Efficient Non-fullerene Polymer Solar Cells.CHINESE JOURNAL OF CHEMISTRY,35(12),1813-1823. |
| MLA | Liu, Wenxu,et al."A Novel BODIPY-Based Low-Band-Gap Small-Molecule Acceptor for Efficient Non-fullerene Polymer Solar Cells".CHINESE JOURNAL OF CHEMISTRY 35.12(2017):1813-1823. |
入库方式： OAI收割
来源：化学研究所
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