Synthesis and Photovoltaic Properties of a Series of Narrow Bandgap Organic Semiconductor Acceptors with Their Absorption Edge Reaching 900 nm
文献类型：期刊论文
| 作者 | Li, Xiaojun1,2; Huang, He2; Bin, Haijun1,2; Peng, Zhengxing4,5; Zhu, Chenhui6; Xue, Lingwei1; Zhang, Zhi-Guo1; Zhang, Zhanjun2; Ade, Harald4,5; Li, Yongfang1,2,3 |
| 刊名 | CHEMISTRY OF MATERIALS
 |
| 出版日期 | 2017-12-12 |
| 卷号 | 29期号:23页码:10130-10138 |
| ISSN号 | 0897-4756 |
| DOI | 10.1021/acs.chemmater.7b03928 |
| 英文摘要 | Three n-OS acceptors with E-g values of <1.4 eV were synthesized by introducing double-bond pi-bridges into ITIC (ITVIC) and ITIC with monofluorine (ITVfIC) or bifluorine (ITVffIC) substituents on its end groups, and the structure-property relationships of the acceptors were systematically studied. The three n-OS films show broad absorption covering the wavelength range of 550-900 nm with narrow E-g values of 1.40 eV for ITVIC, 1.37 eV for ITVfIC, and 1.35 eV for ITVffIC. Additionally, the fluorine substitution downshifted the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels of the compounds. The photovoltaic properties of the n-OS acceptors were investigated by using a medium bandgap conjugated polymer J71 as a donor. The optimized polymer solar cells (PSCs) based on J71:ITVffIC demonstrated a power conversion efficiency (PCE) of 10.54% with a high J(sc) of 20.60 mA cm(-2) and a V-oc of 0.81 V, and the highest J(sc) reached 22.83 mA cm(-2). The high J(sc) values of the devices could be attributed to the broad absorption and lower-lying HOMO energy levels of the acceptor. Considering the V-oc of 0.81 V and the narrow bandgap of 1.35 eV for the acceptor ITVffIC, we found the energy loss (E-loss) of the ITVffIC-based PSCs was reduced to 0.54 eV, which is the lowest value in the PSCs with a PCE of >10%. The results indicate that ITVffIC is a promising narrow E-g acceptor for application in tandem and semitransparent PSCs. |
| 语种 | 英语 |
| 出版者 | AMER CHEMICAL SOC |
| WOS记录号 | WOS:000418206600033 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/45329]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, Zhanjun; Ade, Harald; Li, Yongfang |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, CAS Res Educ Ctr Excellence Mol Sci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China 3.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Jiangsu, Peoples R China 4.North Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA 5.North Carolina State Univ, ORaCEL, Raleigh, NC 27695 USA 6.Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA |
| 推荐引用方式 GB/T 7714 | Li, Xiaojun,Huang, He,Bin, Haijun,et al. Synthesis and Photovoltaic Properties of a Series of Narrow Bandgap Organic Semiconductor Acceptors with Their Absorption Edge Reaching 900 nm[J]. CHEMISTRY OF MATERIALS,2017,29(23):10130-10138. |
| APA | Li, Xiaojun.,Huang, He.,Bin, Haijun.,Peng, Zhengxing.,Zhu, Chenhui.,...&Li, Yongfang.(2017).Synthesis and Photovoltaic Properties of a Series of Narrow Bandgap Organic Semiconductor Acceptors with Their Absorption Edge Reaching 900 nm.CHEMISTRY OF MATERIALS,29(23),10130-10138. |
| MLA | Li, Xiaojun,et al."Synthesis and Photovoltaic Properties of a Series of Narrow Bandgap Organic Semiconductor Acceptors with Their Absorption Edge Reaching 900 nm".CHEMISTRY OF MATERIALS 29.23(2017):10130-10138. |
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来源：化学研究所
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