Conjugated Side-Chain-Isolated D-A Copolymers Based on Benzo[1,2-b:4,5-b ']dithiophene-alt-dithienylbenzotriazole: Synthesis and Photovoltaic Properties
文献类型：期刊论文
| 作者 | Min, Jie; Zhang, Zhi-Guo; Zhang, Siyuan; Li, Yongfang |
| 刊名 | CHEMISTRY OF MATERIALS
 |
| 出版日期 | 2012-08-28 |
| 卷号 | 24期号:16页码:3247-3254 |
| 关键词 | Polymer Solar Cells Two-dimensional Conjugated Polymers Side-chain Isolation D-a Copolymers |
| ISSN号 | 0897-4756 |
| DOI | 10.1021/cm3017006 |
| 英文摘要 | Conjugated side-chain-isolated D-A copolymers, based on the donor unit of benzodithiophene (BDT) with a thiophene-conjugated side chain, thiophene pi bridge, and the acceptor unit of benzotriazole (BTA) with or without fluorine substitution (PBDT-FBTA and PBDT-HBTA), were designed and synthesized for elucidating their structure-property relationships. The copolymer films demonstrated well-defined absorption peaks with steep absorption edges, consistent with their rigid and ordered structures in the solid films. The substitution of a thiophene-conjugated side chain S. on the BDT unit in the copolymers aroused 15-nm red-shifted absorption in comparison with its polymer analogues with alkoxy side chains on the BDT unit. Compared to PBDT-HBTA, PBDT-FBTA with two-fluorine-atom substitution on the BTA unit demonstrated a lower highest occupied molecular orbital energy level, higher hole mobility, and significantly better photovoltaic performance. A polymer solar cell (PSC) based on PBDT-FBTA/PC70BM (1:2, w/w) with a 5% 1,8-diiodooctane additive displayed a power conversion efficiency (PCE) of 6.0% with a J(sc) of 11.9 mA.cm(-2), a V-OC of 0.75 V, and a fill factor of 67.2%, under the illumination of AM1.5G, 100 mW cm(-2). Even at a thicker active layer of 400 nm, the PSC still demonstrated a higher PCE of 4.74%. The results indicate that PBDT-FBTA is a promising polymer donor material for future application of large-area PSCs. |
| 语种 | 英语 |
| WOS记录号 | WOS:000307988800017 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/48121]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, Zhi-Guo |
| 作者单位 | Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Min, Jie,Zhang, Zhi-Guo,Zhang, Siyuan,et al. Conjugated Side-Chain-Isolated D-A Copolymers Based on Benzo[1,2-b:4,5-b ']dithiophene-alt-dithienylbenzotriazole: Synthesis and Photovoltaic Properties[J]. CHEMISTRY OF MATERIALS,2012,24(16):3247-3254. |
| APA | Min, Jie,Zhang, Zhi-Guo,Zhang, Siyuan,&Li, Yongfang.(2012).Conjugated Side-Chain-Isolated D-A Copolymers Based on Benzo[1,2-b:4,5-b ']dithiophene-alt-dithienylbenzotriazole: Synthesis and Photovoltaic Properties.CHEMISTRY OF MATERIALS,24(16),3247-3254. |
| MLA | Min, Jie,et al."Conjugated Side-Chain-Isolated D-A Copolymers Based on Benzo[1,2-b:4,5-b ']dithiophene-alt-dithienylbenzotriazole: Synthesis and Photovoltaic Properties".CHEMISTRY OF MATERIALS 24.16(2012):3247-3254. |
入库方式： OAI收割
来源：化学研究所
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