Thiazole-Induced Quinoid Polymers for Efficient Solar Cells: Influence of Molecular Skeleton, Regioselectivity, and Regioregularity
文献类型：期刊论文
| 作者 | Zhu, Dangqiang; Wang, Qian; Wang, Yingying; Bao, Xichang; Qiu, Meng; Shahid, Bilal; Li, Yonghai; Yang, Renqiang |
| 刊名 | CHEMISTRY OF MATERIALS
 |
| 出版日期 | 2018-07-24 |
| 卷号 | 30期号:14页码:4639-4645 |
| ISSN号 | 0897-4756 |
| DOI | 10.1021/acs.chemmater.8b01250 |
| 英文摘要 | Fluorination strategy has been regarded as a promising approach to improve the photovoltaic performance in polymer solar cells. However, the synthesis is relatively tedious and costly for most fluorinated momomers. In this work, which is different from works where fluorine atoms are usually incorporated on the side chain, we successfully developed a thiazole-induced strategy to construct efficient photovoltaic materials via inserting one thiazole unit into the backbone of a nonfluorinated quinoid polymer, which would enhance the intermolecular interactions and decrease the ionization potential (IP) of the resulted polymers, benefiting from the desirable molecular skeleton. And then, considering the asymmetry nature of acceptor segments, the influence of molecular regioselectivity with different orientations of the thiazole unit on optoelectronic properties was systematically investigated. Encouragingly, a superior power conversion efficiency (PCE) of 9.36% for PBTzT-4-based photovoltaic device was obtained, higher than that of the isomer polymer PBTzT-6 (PCE = 8.52%) and a signficant increase of 50% compared to the widely reported analogue polymer PBDTTT-E-T (PCE = 6.21%) just without a thiazole unit, which can be ascribed to more planar molecular conformation, stronger crystallinity, and excellent phase separation. More interestingly, compared with random polymers, the regioregular copolymers exhibit enhanced red-shifted absorption and better crystallinity and compatibility with PC71BM, leading to more desirable efficicency for PBTzT-4R-based devices (PCE = 9.63%) with higher J(sc) of 17.56 mA/cm(2), which can be comparable to the typical polymer PTB7-Th. This work not only provides a new strategy to improve the intermolecular interaction through backbone design but also reveals that the orientations of the asymmetric unit (that is, regioselectivity and regioregularity) along the polymer backbone play a crucial role and should be taken into account in future molecule design. |
| WOS关键词 | LOW-BANDGAP POLYMER ; HIGH-PERFORMANCE ; CONJUGATED POLYMERS ; PHOTOVOLTAIC POLYMERS ; ACCEPTOR ; FLUORINATION ; COPOLYMERS ; BENZODITHIOPHENE ; THIENOTHIOPHENE ; CONFORMATION |
| 资助项目 | National Natural Science Foundation of China[21604092] ; National Natural Science Foundation of China[51573205] ; National Natural Science Foundation of China[51773220] ; Ministry of Science and Technology of China[2014CB643501] ; China Postdoctoral Science Foundation[2017M610453] ; Youth Innovation Promotion Association CAS[2016194] |
| WOS研究方向 | Chemistry ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000440105500020 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; Ministry of Science and Technology of China ; China Postdoctoral Science Foundation ; Youth Innovation Promotion Association CAS |
| 源URL | [http://ir.qibebt.ac.cn/handle/337004/12379]  |
| 专题 | 中国科学院青岛生物能源与过程研究所 |
| 通讯作者 | Yang, Renqiang |
| 作者单位 | Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Dangqiang,Wang, Qian,Wang, Yingying,et al. Thiazole-Induced Quinoid Polymers for Efficient Solar Cells: Influence of Molecular Skeleton, Regioselectivity, and Regioregularity[J]. CHEMISTRY OF MATERIALS,2018,30(14):4639-4645. |
| APA | Zhu, Dangqiang.,Wang, Qian.,Wang, Yingying.,Bao, Xichang.,Qiu, Meng.,...&Yang, Renqiang.(2018).Thiazole-Induced Quinoid Polymers for Efficient Solar Cells: Influence of Molecular Skeleton, Regioselectivity, and Regioregularity.CHEMISTRY OF MATERIALS,30(14),4639-4645. |
| MLA | Zhu, Dangqiang,et al."Thiazole-Induced Quinoid Polymers for Efficient Solar Cells: Influence of Molecular Skeleton, Regioselectivity, and Regioregularity".CHEMISTRY OF MATERIALS 30.14(2018):4639-4645. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
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