金纳米颗粒对染料敏化太阳能电池性能的优化

Performance Enhancement in Dye-Sensitized Solar Cells by Au Nanoparticles

采用球磨法制备一系列掺杂有不同含量立方形金纳米颗粒的复合光阳极薄膜,并组装成染料敏化太阳能电池,研究立方形金纳米颗粒对光阳极薄膜以及染料敏化太阳能电池性能的影响。研究表明,当掺入立方形金纳米颗粒的质量分数为0.8%时,太阳能电池呈现出最优性能,其短路电流密度为15.32mA/cm^2,光电转换效率为6.708%,相比基于纯TiO2光阳极分别提高14.47%和12%。太阳能电池性能的显著提高主要归因于立方形金纳米颗粒独特的局域表面等离子体共振效应,其能有效改善染料分子的光吸收性能,进而提高电池的光电转换效率。

A series of TiO2 nanocomposite photoanodes with different amounts of Au nanocubes were pre - pared by a ball milling method and applied to assemble a series of dye - sensitized solar cells ( DSSC ).The influences of Au nanocubes on the performance of the photoanode and dye - sensitized solar cells were inves - tigated.The results demonstrated that the optimal properties with an Jsc of 15. 32mA·cm^- 2 , and the photoelectric conversion efficiency ( PCE ) of 6.708% were obtained in DSSC with 0.8% Au nanocubes content , which increased significantly by 14. 47% and 12%in comparison with those of the DSSC with pure TiO2 photoanode.These significant improvements in the properties of the optimal DSSC were mainly at - tributed to the increase of the light - absorption of the dye molecules due to the localized surface plasmon resonance of Au nanocubes in composite photoanode.