Synthesis of novel multi-chromophoric soluble perylene derivatives and their photosensitizing properties with wide spectral response for SnO2 nanoporous electrode
作者:He Tian、Pei-Hua Liu、Weihong Zhu、Enqin Gao、Da-Jun Wu、Sengmin Cai
DOI:10.1039/b004063k
日期:——
Two series of new multi-chromophoric perylene-3,4:9,10-tetracarboxylic
dianhydride dyes for solar cell sensitizers have been synthesized. One series
consists of oxadiazole or naphthaldicarboximide that are linked with perylene
units as N,N′-substituted chromophores. The other
series has four substituents in the bay-region of the perylene core in
addition to N,N′-substituents. These novel routes
to highly efficient sensitizers for Grätzel-type solar cells avoid
the complication of doping. A wide spectral photoresponse (from 310 to 700 nm)
was observed with maximum IPCE (incident photon-to-current efficiency)
of 24%. In addition, the sensitization is dependent on the energy match of
the energy bands of the semiconductor and the redox potential of the segments
in such assembled dyes.
我们合成了两个系列的用于太阳能电池敏化剂的新型多色素过烯-3,4:9,10-四羧酸二酐染料。其中一个系列由噁二唑或萘二甲酰亚胺组成,与作为 N,N′-取代发色团的过烯单元相连。另一个系列除了 N,N′-取代基外,还在过烯烃核的畦区有四个取代基。这些用于格栅型太阳能电池的高效敏化剂的新路线避免了掺杂的复杂性。研究人员观察到了宽光谱光响应(从 310 纳米到 700 纳米),最大 IPCE(入射光子到电流的效率)为 24%。此外,敏化效果还取决于半导体能带的能量匹配以及这种组装染料中各段的氧化还原电位。