Effects of pi-Conjugated Bridges on Photovoltaic Properties of Donor-pi-Acceptor Conjugated Copolymers
文献类型：期刊论文
| 作者 | Wang, Xiaochen1,2; Sun, Yeping1,2; Chen, Song1; Guo, Xia2; Zhang, Maojie2; Li, Xiaoyu1; Li, Yongfang2; Wang, Haiqiao1 |
| 刊名 | MACROMOLECULES
 |
| 出版日期 | 2012-02-14 |
| 卷号 | 45期号:3页码:1208-1216 |
| ISSN号 | 0024-9297 |
| DOI | 10.1021/ma202656b |
| 英文摘要 | A series of conjugated donor (D)-pi-acceptor (A) copolymers, P(BDT-F-BT), P(BDT-T-BT), and P(BDT-TT-BT), based on benzodithiophene (BDT) donor unit and benzothiadiazole (BT) acceptor unit with different pi-bridges, were designed and synthesized via a Pd-catalyzed Stille-coupling method. The pi-bridges between the BDT donor unit and BT acceptor unit are furan (F) in P(BDT-F-BT), thiophene (T) in P(BDT-T-BT) and thieno[3,2-b]thiophene (TT) in P(BDT-TT-BT). It was found that the pi-bridges significantly affect the molecular architecture and optoelectronic properties of the copolymers. With the pi-bridge varied from furan to thiophene, then to thieno[3,2-b]thiophene, the shape of the molecular chains changed from z-shaped almost straight line gradually. Band gaps of P(BDT-F-BT), P(BDT-T-BT) and P(BDT-TT-BT) were tuned from 1.96 to 1.82 to 1.78 eV with HOMO levels up-shifted from -5.44 to -5.35 to -5.21 eV, respectively. Bulk heterojunction solar cells with the polymers as donor and PC71BM as acceptor demonstrated power conversion efficiency varied from 2.81% for P(BDT-F-BT) to 3.72% for P(BDT-T-BT) and to 4.93% for P(BDT-TT-BT). Compared to furan and thiophene, thieno[3,2-b]thiophene pi-bridge in the copolymers shows superior photovoltaic performance. The results indicate that the photovoltaic performance of some high efficiency D-A copolymers reported in literatures could be improved further by inserting suitable pi-bridges. |
| 语种 | 英语 |
| WOS记录号 | WOS:000300124200009 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/49375]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Xiaoyu |
| 作者单位 | 1.Beijing Univ Chem Technol, Coll Mat Sci & Engn, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xiaochen,Sun, Yeping,Chen, Song,et al. Effects of pi-Conjugated Bridges on Photovoltaic Properties of Donor-pi-Acceptor Conjugated Copolymers[J]. MACROMOLECULES,2012,45(3):1208-1216. |
| APA | Wang, Xiaochen.,Sun, Yeping.,Chen, Song.,Guo, Xia.,Zhang, Maojie.,...&Wang, Haiqiao.(2012).Effects of pi-Conjugated Bridges on Photovoltaic Properties of Donor-pi-Acceptor Conjugated Copolymers.MACROMOLECULES,45(3),1208-1216. |
| MLA | Wang, Xiaochen,et al."Effects of pi-Conjugated Bridges on Photovoltaic Properties of Donor-pi-Acceptor Conjugated Copolymers".MACROMOLECULES 45.3(2012):1208-1216. |
入库方式： OAI收割
来源：化学研究所
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