Organic dyes containing fused acenes as building blocks: Optical, electrochemical and photovoltaic properties
作者:Peng Gao、Hoi Nok Tsao、Joel Teuscher、Michael Grätzel
DOI:10.1016/j.cclet.2017.09.056
日期:2018.2
Abstract Two D- π -A dyes based on fused acenes (carbazole, cyclopenta[2,1-b:3,4-b']dithiophene (CPDT) and dithieno[3,2-b:2',3'-d]pyrrole (DTP)) were synthesized, characterized using UV-vis absorption spectroscopy and electrochemistry, density function theory (DFT) calculations, and used as sensitizers in dye-sensitized solar cells (DSSCs). The two sensitizers were compared thoroughly over physicochemical
摘要两种基于稠合乙炔的D-π-A染料(咔唑,环戊[2,1-b:3,4-b']二噻吩(CPDT)和双硫杂[3,2-b:2',3'-d合成了[]吡咯(DTP)),利用紫外可见吸收光谱和电化学,密度泛函理论(DFT)计算对其进行了表征,并将其用作染料敏化太阳能电池(DSSC)的敏化剂。对这两种敏化剂的理化性质和DSSC性能进行了彻底比较。尽管DTP染料具有轻微的蓝移和较弱的入射光子-收集电子(IPCE)转换效率响应,但相对于CPDT系统,开路光电压值的大大增加和电荷转移动力学的改善带来了卓越的功率转换效率。这项工作揭示了DTP作为敏化剂设计桥梁的潜力。