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题名: Non-fullerene polymer solar cells based on a selenophene-containing fused-ring acceptor with photovoltaic performance of 8.6%
作者: Li, Yongxi1; Zhong, Lian2, 3; Wu, Fu-Peng1; Yuan, Yi1; Bin, Hai-Jun2; Jiang, Zuo-Quan1; Zhang, Zhanjun3; Zhang, Zhi-Guo2; Li, Yongfang2, 3, 4; Liao, Liang-Sheng1
刊名: ENERGY & ENVIRONMENTAL SCIENCE
发表日期: 2016
卷: 9, 期:11, 页:3429-3435
收录类别: SCI
英文摘要: In this work, we present a non-fullerene electron acceptor bearing a fused five-heterocyclic ring containing selenium atoms, denoted as IDSe-T-IC, for fullerene-free polymer solar cells (PSCs). This molecule exhibits a low band gap (E-g = 1.52 eV), strong absorption in the 600-850 nm region and a high LUMO level (-3.79 eV). When a large band gap polymer J51 (E-g = 1.91 eV) was used as the donor, complementary absorption of the polymer donor and acceptor was obtained in the wavelength range of 350-850 nm. The solar cell based on J51:IDSe-T-IC gives a maximum PCE of 8.6%, with a high V-oc of 0.91 V, a J(sc) of 15.20 mA cm(-2) and a fill factor (FF) of 62.0%. Moreover, this performance is much higher than that of J51:PC71BM based PSCs under similar device fabrication conditions (PCE = 6.0%). The trade-off features of the J(sc) and V-oc existing in PSCs with fullerene acceptors have been minimized in the fullerene-free PSCs based on IDSe-T-IC and J51. The results demonstrate that fine-tuning the absorption and electronic energy levels of non-fullerene acceptors, and properly selecting a polymer donor to achieve complementary absorption, is a promising way to further improve the performance of the PSCs.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35695
Appears in Collections:有机固体实验室_期刊论文

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作者单位: 1.Soochow Univ, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Jiangsu, Peoples R China
2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China
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