Zhang Wei, Wang Zhong-Sheng
Department of Chemistry, Lab of Advanced Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , 2205 Songhu Road, Shanghai 200438, P. R. China.
ACS Appl Mater Interfaces. 2014 Jul 9;6(13):10714-21. doi: 10.1021/am502556y. Epub 2014 Jun 23.
Replacing liquid-state electrolytes with solid-state electrolytes has been proven to be an effective way to improve the durability of dye-sensitized solar cells (DSSCs). We report herein the synthesis of amorphous ionic conductors based on polyhedral oligomeric silsesquioxane (POSS) with low glass transition temperatures for solid-state DSSCs. As the ionic conductor is amorphous and in the elastomeric state at the operating temperature of DSSCs, good pore filling in the TiO2 film and good interfacial contact between the solid-state electrolyte and the TiO2 film can be guaranteed. When the POSS-based ionic conductor containing an allyl group is doped with only iodine as the solid-state electrolyte without any other additives, power conversion efficiency of 6.29% has been achieved with good long-term stability under one-sun soaking for 1000 h.
用固态电解质替代液态电解质已被证明是提高染料敏化太阳能电池（DSSC）耐久性的有效方法。我们在此报告基于具有低玻璃化转变温度的多面体低聚倍半硅氧烷（POSS）合成用于固态DSSC的非晶态离子导体。由于该离子导体在DSSC的工作温度下是非晶态且处于弹性体状态，因此可以确保在TiO₂薄膜中良好的孔隙填充以及固态电解质与TiO₂薄膜之间良好的界面接触。当含有烯丙基的基于POSS的离子导体仅掺杂碘作为固态电解质而不添加任何其他添加剂时，在1000小时的一个太阳光照浸泡下实现了6.29%的功率转换效率以及良好的长期稳定性。
