| 第 51 卷第 2 期 |  | Vol. 51 No. 2 | | 2021 年 4 月 | Apr 2021 |
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所屬欄目：功能材料
基于苯并二噻吩的核小分子受體材料合成及其光伏性能研究 |
| 謝 亮1，陳景龍2，梁淑敏1，李皇芬1，曹佳民1*，肖曼軍2*，唐子龍1*
（1. 湖南科技大學(xué) 化學(xué)化工學(xué)院 理論有機化學(xué)與功能分子教育部重點(diǎn)實(shí)驗室，湖南 湘潭 411201；2. 湘潭大學(xué) 化學(xué)學(xué)院 環(huán)境友好化學(xué)與應用教育部重點(diǎn)實(shí)驗室，湖南 湘潭 411105） |
| 摘 要：以苯并［1，2-b：4，5-b'］二噻吩-4，8-二酮和3-（2-癸基十四烷基）噻吩為原料，通過(guò)數步反應高效合成了三種目標小分子受體BDT-2H、BDT-2F和BDT-2Cl。三種小分子受體具有依次紅移的吸收光譜，光學(xué)帶隙分別為1.72、1.70、1.65 eV，HOMO和LUMO能級也呈現出依次降低的趨勢。因此，三種小分子受體分別與聚合物給體PBDB-T共混制備的有機太陽(yáng)能電池具有依次降低的開(kāi)路電壓（0.99、0.88、0.80 V）和逐步提高的短路電流（6.74、11.63、15.63 mA·cm-2），能量轉換效率分別為2.82%、5.64%和7.17%。 |
| 關(guān)鍵詞：有機太陽(yáng)能電池；小分子受體；苯并二噻吩；光伏性能 |
| 中圖分類(lèi)號：TM914 文獻標識碼：A 文章編號：1009-9212（2021）02-0050-05 |
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| Synthesis and Photovoltaic Properties of Small-molecule Acceptors Based on Benzodithiophene Core |
| XIE Liang1, CHEN Jing-long2, LIANG Shu-min1, LI Huang-fen1, CAO Jia-min1*, XIAO Man-jun2*, TANG Zi-long1*
(1. Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China; 2. Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105, China) |
| Abstract：Three small-molecule acceptors (SMAs) including BDT-2H，BDT-2F and BDT-2Cl were synthesized efficiently in several steps using benzo[1,2-b:4,5-b'] dithiophene-4,8-dione and 3-(2-decyltetradecyl) thiophene as the starting materials. From BDT-2H to BDT-2F and BDT-2Cl, the absorption spectra were red-shifted with the optical bandgaps of 1.72, 1.70 and 1.65 eV, respectively, and the HOMO and LUMO energy levels also decreased successively. Therefore, the organic solar cells using PBDB-T as the donor material and three SMAs as the acceptor materials exhibited lower open-circuit voltage (0.99, 0.88 and 0.80 V) and enhanced short-circuit current (6.74, 11.63 and 15.63 mA·cm-2) gradually, and the energy conversion efficiencies of 2.82%, 5.64% and 7.17% were achieved for these three cells, respectively. |
| Key words：organic solar cells; small-molecule acceptors; benzodithiophene; photovoltaic properties |
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基金項目：國家自然科學(xué)基金資助項目（21604021），湖南省自然科學(xué)基金資助項目（2018JJ3141）。
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作者簡(jiǎn)介：謝 亮（1996—），男，湖南耒陽(yáng)人，碩士研究生，研究方向：有機太陽(yáng)能電池（E-mail：794234012@qq.com）。
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聯(lián) 系 人：曹佳民，副教授，研究方向：有機功能材料（E-mail：minjiacao@163.com）；肖曼軍，講師，研究方向：有機光電材料與器械（E-mial：xmjo704@163.com）;唐子龍，教授，研究方向：有機合成、藥物和農藥化學(xué)（E-mail：zltang67@aliyun.com）。
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收稿日期：2021-03-21
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