| 一种三维四面体星型共轭小分子用于有机太阳能电池 |
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| 引用本文： | 秦洋,阳建中. 一种三维四面体星型共轭小分子用于有机太阳能电池[J]. 上海师范大学学报(自然科学版), 2014, 43(2): 159-167 |
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| 作者姓名： | 秦洋 阳建中 |
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| 作者单位： | 美国新墨西哥大学化学和化学生物系,新墨西哥州 阿尔伯克基87131-0001 |
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| 基金项目： | National Science Foundation(NSF)is unknowledged for supporting the NMR facility at UNM throughgrants CHE-0840523 and 0946690 |
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| 摘 要： | 合成了一种由四苯基硅烷为中心和氰基脂功能化三联噻吩为支链构成的新型三维四面体星型小分子SO.循环伏安曲线测得这种小分子拥有很低的HOMO能级（-5.3 eV）和较窄的能带（1.9 eV）.吸收光谱,X射线散射和差示扫描量热法实验都显示这种化合物拥有很高的结晶度.制作和测试了基于SO分子的太阳能电池.光学显微镜实验证实相对低的光电转化效率主要是由于没有形成很好的相分离.
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| 关 键 词： | 四面体星型小分子 有机太阳能电池 结晶度 相分离 |
| 收稿时间： | 2014-03-26 |
A three-dimensional tetrahedral-shaped conjugated small molecule for organic solar cells |
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| QIN Yang and YANG Jianzhong. A three-dimensional tetrahedral-shaped conjugated small molecule for organic solar cells[J]. Journal of Shanghai Normal University(Natural Sciences), 2014, 43(2): 159-167 |
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| Authors: | QIN Yang and YANG Jianzhong |
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| Affiliation: | QIN Yang;YANG Jianzhong;Department of Chemistry & Chemical Biology,University of New Mexico; |
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| Abstract: | We report the synthesis of a novel three-dimensional tetrahedral-shaped small molecule,SO,containing a tetraphenylsilane core and cyanoester functionalized terthiophene arms. A deep lying HOMO energy level of-5. 3 eV and a narrow bandgap of 1. 9 eV were obtained from cyclic voltammetry measurements. Absorption,X-ray scattering and differential scanning calorimetry experiments all indicate high crystallinity of this compound. Solar cells employing SO were fabricated and evaluated. The relatively low performance was mainly ascribed to lack of appreciable phase separation,which is confirmed by optical microscopy. |
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| Keywords: | tetrahedral-shaped small molecule organic solar cell crystallinity phase separation |
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