摘要
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%.
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.
作者
周鑫云
谢凌超
吴凯乐
谭松庭
Zhou Xinyun;Xie Lingchao;Wu Kaile;Tan Songting(Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, College of Chemistry, Xiangtan University, Xiangtan 411105)
出处
《有机化学》
SCIE
CAS
CSCD
北大核心
2019年第9期2589-2598,共10页
Chinese Journal of Organic Chemistry
基金
国家自然科学基金(Nos.21875204,51173154)资助项目~~
关键词
三苯胺
苯并噻二唑
有机染料
光伏性能
triphenylamine
benzothiadiazole
organic dye
photovoltaic property