Four organic dyes bearing the phenoxazine chromophore have been synthesized and applied in dye-sensitized solar cells (DSCs). The effect of different dye structures on the performance of the DSCs was investigated systematically with photophysical, photovoltaic as well as photoelectrochemical methods. Due to the slow recombination process between injected electrons and electrolyte, the IB3 dye with two 2,4-dibutoxyphenyl units showed the best efficiency of 7.0% under 100 mW cm−2 light illumination in the liquid state-DSCs. Moreover, the phenoxazine dyes-based solid state-DSCs were fabricated for the first time. With the IB4 dye, a higher efficiency of 3.2% has been achieved under the same light intensity.
我们合成了四种含有
吩嗪发色团的有机
染料,并将其应用于
染料敏化太阳能电池(
DSCs)。通过光物理、光电和光电
化学方法,系统地研究了不同
染料结构对
DSC 性能的影响。由于注入电子与电解质之间的缓慢
重组过程,在液态
DSCs 中,具有两个 2,4- 二
丁氧基苯基单元的 IB3
染料在 100 mW cm-2 光照下显示出 7.0% 的最佳效率。此外,还首次制备了基于
吩噁嗪染料的固态-
DSC。在相同的光照强度下,IB4
染料的效率更高,达到了 3.2%。