Two new base dyes bearing pyridyl acceptor (Py-1 and Py-2) are synthesized, which are respectively co-sensitized with an acid dye containing cyanoacetic acceptor (NP-1), constructing the acid@base co-sensitized solar cells (co-DSSCs). The lightspot is that the carboxylic and pyridyl groups could anchor onto the Brønsted-acid and Lewis-acid sites of TiO₂ surfaces, respectively. The research results show that the combination of these acid and base dyes is beneficial to suppress the competitive adsorption between dyes, thus increasing the dye coverage on TiO₂ surfaces and decreasing the electron recombination, and further raising the photovoltage; moreover, their complementary spectral responses can significantly increase the photocurrent. Therefore, the acid@base co-DSSC based on NP-1@Py-2(2:3) delivers the best photovoltaic performances in comparison to the DSSC based on NP-1, in which the photovoltaic efficiency is increased by 32.5% (from 4.0% to 5.3%). Furthermore, the photovoltaic performances under different irradiation and long-term stability measurements can provide a basis for application evaluation of co-DSSCs.

合成了两种带有吡啶基受体的新型碱性染料（Py-1和Py-2），分别与含有氰乙酸受体的酸性染料（NP-1）共敏化，构建了酸@碱共敏化太阳能电池（co -DSSC）。亮点是羧基和吡啶基可以分别锚定在 TiO ₂表面的布朗斯台德酸和路易斯酸位点上。研究结果表明，这些酸碱染料的结合有利于抑制染料之间的竞争吸附，从而增加染料在TiO _{2 上的}覆盖率。表面，减少电子复合，进一步提高光电压；此外，它们的互补光谱响应可以显着增加光电流。因此，酸@碱共DSSC基于NP-1 @ PY-2（2：3）提供最佳的光电性能的对比，以基于所述DSSC NP-1 ，其中，所述光伏效率提高了32.5％（从 4.0% 到 5.3%）。此外，不同辐照下的光伏性能和长期稳定性测量可以为co-DSSCs的应用评估提供依据。