Dye sensitizers of polymer using the complex of Cd (II) or Cu (II) with imidazole as auxiliary electron acceptor for dye-sensitized solar cells
作者:Xu Chen、Yanlong Liao、Ye Liu、Chunxiao Zhu、TianQi Chen、Chaofan Zhong
DOI:10.1016/j.dyepig.2016.12.053
日期:2017.4
PBDTT–BP–Cu) using the complexes of Cd(II) or Cu(II) with imidazole as auxiliary electron acceptors, thienylbenzo[1,2-b:4,5-b'] dithiophene (BDTT) or fluorine (FL) derivative as electron donor (D), and 8-quinolinol derivative as π bridge and acceptor, have been designed and synthesized firstly. Their thermal, optical, electrochemical properties and photovoltaic performance in dye-sensitized solar cells (DSSCs)
为了增强染料敏化剂在可见光和近红外区域的吸收强度并扩大其吸收范围,并提高光伏性能,我们推出了四种新型的金属复合物D-A-π-A主题染料敏化剂(PFL–BP– Cd,PFL–BP–Cu,PBDTT–BP–Cd和PBDTT–BP–Cu),使用Cd(II)或Cu(II)与咪唑作为辅助电子受体,噻吩基苯并[1,2-b:4,首先设计合成了5-b']二噻吩(BDTT)或氟(FL)衍生物作为电子供体(D),以及8-喹啉醇衍生物作为π桥和受体。还研究了它们在染料敏化太阳能电池(DSSC)中的热,光学,电化学性质和光伏性能。结果表明,高分子金属络合物中的四种染料敏化剂在聚合物染料敏化剂中具有相对较强的吸光性和较高的光伏性能。紫外-可见吸收光谱表明,PBDTT-BP-Cd与其他相比具有明显的红移,并且在全日照(AM)下,PBDTT-BP-Cd敏化的器件具有最高的功率转换效率(PCE),为6.13%。 1.5