Modulating PCBM-Acceptor Crystallinity and Organic Solar Cell Performance by Judiciously Designing Small-Molecule Mainchain End-Capping Units
文献类型：期刊论文
| 作者 | Jiang, Bo; Yao, Jiannian; Zhan, Chuanlang |
| 刊名 | ACS APPLIED MATERIALS & INTERFACES
 |
| 出版日期 | 2016-10-05 |
| 卷号 | 8期号:39页码:26058-26065 |
| 关键词 | end-capping bulk-size electron-donating/electron-accepting small-molecule PCBM crystallinity |
| 英文摘要 | In this article, we report that the bulk-size and electron-donating/electron-accepting nature of moieties, which are end-capping onto small-molecule donor mainchain, not only modulate the donor's absorption, molecular frontier orbitals, and phase ordering, but also effectively tune the PC71BM-acceptor phase crystallinity. Compared to the electron-deficient trifluoromethyl (SM-CF3) units on the diketopyrrolopyrrole (DPP) small molecule mainchain ends, the electron-rich methoxyl (SM-OCH3) units ending on the same mainchain help improve the PC71BM-acceptor phase short-range ordering. As a result, the-OCH3 capping small-molecule displays larger short-circuit current density (J(sc)) when blended with PC71BM (10.72 +/- 0.22 vs. 16.15 +/- 0.53 mA/cm(2)). However, the electron-donating nature of -OCH3 raises the donor HOMO level, which leads to a quite small open circuit voltage (V-oc) (0.624 vs. 0.881 V). Replacement of the -OCH3 with the large and weak electron-donating aromatic carbazolyl (SM-Cz) ones affords the small molecule of SM-Cz. The SM-Cz:PC71BM system affords a high V-oc of 0.846 V and a large J(sc) of 13.33 +/- 0.34 mA/cm(2) after thermal annealing, and hence gives a larger power conversion efficiency (PCE) of 6.26 +/- 0.13%, which is among the top values achieved so far from the DPP molecules. Taken together, these results demonstrate that engineering the end-capping units on small-molecule donor mainchain can effectively modulate the organic solar cell performance. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/35658]  |
| 专题 | 化学研究所_光化学实验室 |
| 作者单位 | Chinese Acad Sci, Inst Chem, CAS Key Lab Photochem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Bo,Yao, Jiannian,Zhan, Chuanlang. Modulating PCBM-Acceptor Crystallinity and Organic Solar Cell Performance by Judiciously Designing Small-Molecule Mainchain End-Capping Units[J]. ACS APPLIED MATERIALS & INTERFACES,2016,8(39):26058-26065. |
| APA | Jiang, Bo,Yao, Jiannian,&Zhan, Chuanlang.(2016).Modulating PCBM-Acceptor Crystallinity and Organic Solar Cell Performance by Judiciously Designing Small-Molecule Mainchain End-Capping Units.ACS APPLIED MATERIALS & INTERFACES,8(39),26058-26065. |
| MLA | Jiang, Bo,et al."Modulating PCBM-Acceptor Crystallinity and Organic Solar Cell Performance by Judiciously Designing Small-Molecule Mainchain End-Capping Units".ACS APPLIED MATERIALS & INTERFACES 8.39(2016):26058-26065. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。