A trifluoromethyl substituted wide bandgap conjugated polymer for non-fullerene polymer solar cells with 10.4% efficiency
文献类型：期刊论文
| 作者 | Li, Wanbin1; Li, Guangda1; Guo, Xia1; Wang, Yong1; Guo, Huan1; Xu, Qingqing1; Zhang, Maojie1; Li, Yongfang1,2 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2018-04-21 |
| 卷号 | 6期号:15页码:6551-6558 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c7ta11059f |
| 英文摘要 | A new wide bandgap copolymer (PBZ-m-CF3) based on meta-trifluoromethyl-p-alkoxyphenyl substituted benzodithiophene (BDTP-m-CF3) and difluorobenzotriazole (FBTZ) was successfully designed and synthesized for efficient non-fullerene polymer solar cells (PSCs). As a comparative material, a wide bandgap copolymer (PBZ1) based on p-alkoxyphenyl substituted benzodithiophene (BDTP) and FBTZ was synthesized by the same method. It was found that introducing trifluoromethyl into the metaposition of the phenyl group led to PBZ-m-CF3 possessing a deeper HOMO energy level of -5.49 eV, a wider optical bandgap (E-g(opt)) of 1.99 eV with a higher extinction coefficient of 6.51 x 10(4) cm(-1) at 533 nm and a suitable hole mobility of 7.86 x 10(-4) cm(2) V-1 s(-1) in comparison with PBZ1 (a HOMO level of -5.27 eV, an E-g(opt) of 1.96 eV with an extinction coefficient of 5.23 x 10(4) cm(-1) at 539 nm and a hole mobility of 7.23 x 10(-4) cm(2) V-1 s(-1)). Non-fullerene bulk heterojunction PSCs based on PBZ-m-CF3 as the donor and ITIC as the acceptor were fabricated by using toluene as the solvent and showed a higher PCE of 10.4% with a high V-oc of 0.94 V, a J(sc) of 18.4 mA cm(-2), and a FF of 60.2% compared with PSCs based on PBZ1: ITIC (a PCE of 5.8% with a V-oc of 0.74 V, a J(sc) of 15.7 mA cm(-2), and a FF of 49.8%). These results demonstrate that a benzodithiophene unit with meta-trifluoromethyl-p-alkoxyphenyl side chains is a promising candidate as an electron-rich building block for high performance PSCs. |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000430368900043 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/42881]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Guo, Xia; Zhang, Maojie |
| 作者单位 | 1.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Organ Solids, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Wanbin,Li, Guangda,Guo, Xia,et al. A trifluoromethyl substituted wide bandgap conjugated polymer for non-fullerene polymer solar cells with 10.4% efficiency[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(15):6551-6558. |
| APA | Li, Wanbin.,Li, Guangda.,Guo, Xia.,Wang, Yong.,Guo, Huan.,...&Li, Yongfang.(2018).A trifluoromethyl substituted wide bandgap conjugated polymer for non-fullerene polymer solar cells with 10.4% efficiency.JOURNAL OF MATERIALS CHEMISTRY A,6(15),6551-6558. |
| MLA | Li, Wanbin,et al."A trifluoromethyl substituted wide bandgap conjugated polymer for non-fullerene polymer solar cells with 10.4% efficiency".JOURNAL OF MATERIALS CHEMISTRY A 6.15(2018):6551-6558. |
入库方式： OAI收割
来源：化学研究所
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