Three organic dyes containing a nitrogen-bridged phenylenevinylene (NPV: indolo[3,2-b]indole) unit were synthesized and applied in dye-sensitized solar cells, where NPV was employed as a donor itself or as a π-spacer with the extra-donor diphenylamine. The photophysical, electrochemical and photovoltaic properties of the dyes were investigated. All dyes displayed broad absorption spectra and high molar extinction coefficient, resulting in high light harvesting efficiency. The results showed that the dye with two cyanoacrylic acid as the acceptors exhibited photovoltaic performance of 7.39% under standard global AM 1.5 solar condition, better than the other two with only one acceptor. These results indicate that the NPV-based organic dye is a promising candidate for efficient DSSCs.

合成了三种含氮桥联亚苯基亚乙烯基（NPV：吲哚[3,2- b ]吲哚）单元的有机染料，并将其应用于染料敏化太阳能电池，其中NPV本身用作施主或与π间隔基一起使用。外供体二苯胺。研究了染料的光物理，电化学和光伏性质。所有染料均显示出较宽的吸收光谱和较高的摩尔消光系数，从而提高了光收集效率。结果表明，以两种氰基丙烯酸为受体的染料在标准的全球AM 1.5日光条件下表现出7.39％的光伏性能，优于其他两种仅具有一种受体的染料。这些结果表明，基于NPV的有机染料是高效DSSC的有希望的候选者。