Significant enhancement of the photovoltaic performance of organic small molecule acceptors via side-chain engineering
文献类型：期刊论文
| 作者 | Su, Wenyan1; Fan, Qunping1; Guo, Xia1; Chen, Juan1; Wang, Yan1; Wang, Xiaohui2; Dai, Ping1; Ye, Chennan1; Bao, Xiaoguang1; Ma, Wei2 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2018-05-07 |
| 卷号 | 6期号:17页码:7988-7996 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c8ta01509k |
| 英文摘要 | To achieve efficient polymer solar cells (PSCs), it is important to increase the optical absorption coefficient and charge mobility of photovoltaic materials for obtaining a high short-circuit current density (J(sc)) and fill factor (FF) in the devices without sacrificing the open-circuit voltage (V-oc). Herein, we designed and synthesized two novel narrow bandgap n-type organic semiconductor (n-OS) acceptors named POIT-M and MOIT-M by modifying the side-chains of IT-M from para-hexylphenyl to para-hexyloxylphenyl and then to meta-hexyloxylphenyl. Due to the synergistic effects of introducing oxygen atoms and varying substitution positions on the phenyl side-chains, MOIT-M shows a significantly improved absorption coefficient, stronger intermolecular pi-pi stacking interaction, increased crystallinity and higher electron mobility in comparison with IT-M and POIT-M, which helps to gain higher J(sc) and FF in PSCs. These special features combined with the complementary absorption of the MOIT-M acceptor and wide bandgap polymer PTZ1 donor resulted in a high power conversion efficiency (PCE) of 11.6% with a V-oc of 0.96 V, a J(sc) of 17.5 mA cm(-2) and a FF of 68.8% for the PSCs processed with simple thermal annealing at 120 degrees C for 10 min, which is one of the highest PCEs reported for additive-free PSCs and significantly higher than those of the PSCs based on PTZ1: IT-M (9.1%) or PTZ1: POIT-M (9.7%). Our results indicate that side-chain engineering is an effective way to further improve the photovoltaic performance of n-OS acceptors in PSCs. |
| 语种 | 英语 |
| WOS记录号 | WOS:000431621700074 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/43215]  |
| 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.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, CAS Res Educ Ctr Excellence Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, Wenyan,Fan, Qunping,Guo, Xia,et al. Significant enhancement of the photovoltaic performance of organic small molecule acceptors via side-chain engineering[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(17):7988-7996. |
| APA | Su, Wenyan.,Fan, Qunping.,Guo, Xia.,Chen, Juan.,Wang, Yan.,...&Li, Yongfang.(2018).Significant enhancement of the photovoltaic performance of organic small molecule acceptors via side-chain engineering.JOURNAL OF MATERIALS CHEMISTRY A,6(17),7988-7996. |
| MLA | Su, Wenyan,et al."Significant enhancement of the photovoltaic performance of organic small molecule acceptors via side-chain engineering".JOURNAL OF MATERIALS CHEMISTRY A 6.17(2018):7988-7996. |
入库方式： OAI收割
来源：化学研究所
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