Low-Band-Gap Conjugated Polymers of Dithieno[2,3-b:7,6-b]carbazole and Diketopyrrolopyrrole: Effect of the Alkyl Side Chain on Photovoltaic Properties
文献类型：期刊论文
| 作者 | Deng, Yunfeng1,2; Chen, Yagang1,2; Liu, Jian1,2; Liu, Lihui1,2; Tian, Hongkun1; Xie, Zhiyuan1; Geng, Yanhou1; Wang, Fosong1 |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2013-06-26 |
| 卷号 | 5期号:12页码:5741-5747 |
| 关键词 | Conjugated Polymers Polymer Solar Cells Low Band Gap Film Morphology Alkyl Chain Effect Power Conversion Efficiency |
| ISSN号 | 1944-8244 |
| DOI | 10.1021/am401175v |
| 英文摘要 | Four donor-acceptor (D-A) conjugated polymers of dithieno[2,3-b;7,6-b]carbazole (DTC) and diketopyrrolopyrrole, which have different alkyls on the nitrogen atom in the DTC unit and are named as P-C8C8, P-C5C5, P-C12, and P-C10, respectively, have been synthesized for studying the effect of the alkyl side chains on the optoelectronic properties of the polymers. All polymers are soluble in various organic solvents and exhibit identical optical band gaps (E-g(opt)) of similar to 1.3 eV and highest occupied molecular orbital energy levels of similar to-5.1 eV. Organic thin-film transistors and bulk heterojunction polymer solar cells (BHJ PSCs) with phenyl-C-71-butyric acid methyl ester (PC71BM) as the electron-accepting material were fabricated via solution spin-casting. Compared to the polymers substituted by branched alkyl chains, the polymers with straight alkyl chains show higher hole mobility. Of these polymers, P-C10 exhibits the highest field effect mobility up to 0.011 cm(2)/V center dot s. The alkyl chain on the DTC unit has a strong impact on the film morphology of polymer:PC71BM blends. Severe phase separation was found for polymers containing branched alkyl chains, and those with straight alkyl chains formed uniform films featuring fine phase separation. An open-circuit voltage (V-oc) of 0.72 V, a short-circuit current density (J(sc)) of 13.4 mA/cm(2), a fill factor (FF) of 62%, and a power conversion efficiency (PCE) of 5.9% were demonstrated for BHJ PSCs based on the P-C10:PC71BM [1:3 (w/w)] blend film. |
| 语种 | 英语 |
| WOS记录号 | WOS:000321237000046 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46897]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Geng, Yanhou |
| 作者单位 | 1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Deng, Yunfeng,Chen, Yagang,Liu, Jian,et al. Low-Band-Gap Conjugated Polymers of Dithieno[2,3-b:7,6-b]carbazole and Diketopyrrolopyrrole: Effect of the Alkyl Side Chain on Photovoltaic Properties[J]. ACS APPLIED MATERIALS & INTERFACES,2013,5(12):5741-5747. |
| APA | Deng, Yunfeng.,Chen, Yagang.,Liu, Jian.,Liu, Lihui.,Tian, Hongkun.,...&Wang, Fosong.(2013).Low-Band-Gap Conjugated Polymers of Dithieno[2,3-b:7,6-b]carbazole and Diketopyrrolopyrrole: Effect of the Alkyl Side Chain on Photovoltaic Properties.ACS APPLIED MATERIALS & INTERFACES,5(12),5741-5747. |
| MLA | Deng, Yunfeng,et al."Low-Band-Gap Conjugated Polymers of Dithieno[2,3-b:7,6-b]carbazole and Diketopyrrolopyrrole: Effect of the Alkyl Side Chain on Photovoltaic Properties".ACS APPLIED MATERIALS & INTERFACES 5.12(2013):5741-5747. |
入库方式： OAI收割
来源：化学研究所
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