Side chain effect on photovoltaic properties of D-A copolymers based on benzodithiophene and thiophene-substituted bithiazole
文献类型：期刊论文
| 作者 | Shen, Ping1,2,3; Bin, Haijun1,2,3; Chen, Xuewen1,2; Li, Yongfang3 |
| 刊名 | ORGANIC ELECTRONICS
 |
| 出版日期 | 2013-12-01 |
| 卷号 | 14期号:12页码:3152-3162 |
| 关键词 | Benzodithiophene Thiophene-substituted Bithiazole D-a Copolymers Side Chain Polymer Solar Cells |
| ISSN号 | 1566-1199 |
| DOI | 10.1016/j.orgel.2013.09.030 |
| 英文摘要 | Two donor-acceptor (D - A) copolymers, PEHBDT-BTz and PODBDT-BTz, containing the same backbone of benzodithiophene (BDT) and bithiazole (BTz) units but different side chains were designed and synthesized. Effects of the side chains of BDT and BTz units on solubility, absorption spectra, energy levels, film morphology, and photovoltaic properties of the polymers were investigated. Results showed that the more branched side chains could increase the molecular weight and the introduction of alkylthienyl groups into BTz unit benefits to broaden the absorption and lower the bandgaps as well as deepen HOMO levels, which are propitious to improve the short-circuit current density (J(sc)) and open-circuit voltage (V-oc) of photovoltaic cells. Polymer solar cells (PSCs) were prepared with the polymers as electron donors and PCBM as an acceptor. The device fabrication conditions, including the additive, the different acceptor and blend ratio of the polymer donor and acceptor, have been optimized. PCE of PSCs based on the copolymers varied from 2.92% for PODBDT-BTz to 3.71% for PEHBDT-BTz, depending on the type and topology of the side chains on the BDT moiety. The results indicate that an appropriate choice of side chains on the backbone is an effective way to improve photovoltaic performance of the related PSCs. (C) 2013 Elsevier B. V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000327146500002 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/53695]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Shen, Ping |
| 作者单位 | 1.Xiangtan Univ, Coll Chem, Xiangtan 411105, Peoples R China 2.Xiangtan Univ, Minist Educ, Key Lab Environm Friendly Chem & Applicat, Xiangtan 411105, Peoples R China 3.Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen, Ping,Bin, Haijun,Chen, Xuewen,et al. Side chain effect on photovoltaic properties of D-A copolymers based on benzodithiophene and thiophene-substituted bithiazole[J]. ORGANIC ELECTRONICS,2013,14(12):3152-3162. |
| APA | Shen, Ping,Bin, Haijun,Chen, Xuewen,&Li, Yongfang.(2013).Side chain effect on photovoltaic properties of D-A copolymers based on benzodithiophene and thiophene-substituted bithiazole.ORGANIC ELECTRONICS,14(12),3152-3162. |
| MLA | Shen, Ping,et al."Side chain effect on photovoltaic properties of D-A copolymers based on benzodithiophene and thiophene-substituted bithiazole".ORGANIC ELECTRONICS 14.12(2013):3152-3162. |
入库方式： OAI收割
来源：化学研究所
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