有机化学 ›› 2019, Vol. 39 ›› Issue (9): 2589-2598.DOI: 10.6023/cjoc201902023 上一篇    下一篇

研究论文

含树枝状和3D三苯胺衍生物有机染料的合成与光伏性能研究

周鑫云, 谢凌超, 吴凯乐, 谭松庭   

  1. 湘潭大学化学学院 教育部环境友好化学与应用重点实验室 湘潭 411105
  • 收稿日期:2019-02-21 修回日期:2019-04-14 发布日期:2019-04-19
  • 通讯作者: 谭松庭 E-mail:tanst2008@163.com
  • 基金资助:

    国家自然科学基金(Nos.21875204,51173154)资助项目.

Synthesis and Photovoltaic Properties of Organic Dyes Containing Dendritic and 3D Triphenylamine Derivatives

Zhou Xinyun, Xie Lingchao, Wu Kaile, Tan Songting   

  1. Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105
  • Received:2019-02-21 Revised:2019-04-14 Published:2019-04-19
  • Contact: 10.6023/cjoc201902023 E-mail:tanst2008@163.com
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 21875204, 51173154).

设计合成了三种以树枝状和3D三苯胺衍生物为给体单元,苯甲酸为受体单元,苯并噻二唑(BT)或双氟苯并噻二唑(DFBT)作为第二受体单元的有机染料,系统研究了不同给体和第二受体单元对染料敏化剂的光物理性能、电化学性能和光伏性能的影响.以树枝状三苯胺衍生物为给体单元的有机染料具有较高的摩尔吸收系数,以3D三苯胺衍生物(IDTTPA)为给体单元的有机染料具有较宽的吸收光谱.基于三种有机染料的染料敏化太阳能电池分别获得了5.27%,4.22%和5.50%的能量转换效率.采用1 mmol·L-1鹅去氧胆酸(CDCA)共吸附剂对电池进行优化后,三种染料的能量转换效率分别提升到5.46%,4.98%和6.26%.

关键词: 三苯胺, 苯并噻二唑, 有机染料, 光伏性能

Three organic dyes with dendritic and 3D triphenylamine derivatives as the donor unit, benzoic acid as the acceptor unit and benzothiadiazole (BT) or difluorobenzothiadiazole (DFBT) as the second acceptor were designed and synthesized. The influences of different donors and second acceptors on the photophysical, electrochemical and photovoltaic properties of dye-sensitizers were systematically investigated. The organic dye with dendritic triphenylamine derivative as a donor unit possesses a higher molar absorption coefficient, and the organic dye with 3D triphenylamine derivative (IDTTPA) as a donor unit has a broader absorption spectrum. The dye-sensitized solar cells based on three organic dyes achieved power conversion efficiencies of 5.27%, 4.22% and 5.50%, respectively. After optimizing the battery with 1 mmol·L-1 co-adsorbent chenodeoxycholic acid (CDCA), the power conversion efficiencies of the organic dyes were increased to 5.46%, 4.98% and 6.26%, respectively.

Key words: triphenylamine, benzothiadiazole, organic dye, photovoltaic property