Broadband Plasmonic Enhancement of High-Efficiency Dye-Sensitized Solar Cells by Incorporating Au@Ag@SiO2 Core-Shell Nanocuboids
Broadband Plasmonic Enhancement of High-Efficiency Dye-Sensitized Solar Cells by Incorporating Au@Ag@SiO2 Core-Shell Nanocuboids
复制标题
通过结合 Au@Ag@SiO2 核壳纳米立方体增强高效染料敏化太阳能电池的宽带等离子体增强
DOI：
10.1021/acsami.9b16245
复制
发表时间：
2020-01-08
影响因子：
9.5
通讯作者：
Dai, Jiyan
中科院分区：
文献类型：
--
作者：
Bao, Zhiyong;Fu, Nianqing;Dai, Jiyan
引入等离激元添加剂是提高染料敏化太阳能电池（DSSC）效率的一种有前景的方法，因为它们可以改善太阳能电池的光捕获能力。在此，我们设计了具有宽带且强等离激元吸收特性的Au@Ag@SiO₂纳米长方体（GSS NCs）作为纳米光子内含物，以实现等离激元增强型DSSC。GSS NCs产生的多种共振吸收可通过改变其结构轻松调节，从而与染料的吸收光谱互补匹配，尤其是在弱吸收区域。通过巧妙调节纳米光子内含物在光阳极中的位置，不仅等离激元近场增强作用，而且远场光散射都能得到充分发挥，以促进光捕获，进而提高DSSC的效率。由此制备的太阳能电池平均效率达到10.34%，最高效率为10.58%。电磁模拟结果与实验观察结果一致，进一步证实了这些DSSC中等离激元增强的协同效应。
The introduction of plasmonic additives is a promising approach to boost the efficiency of the dye-sensitized solar cell (DSSC) since they may improve the light harvesting of a solar cell. Herein, we design broadband and strong plasmonic absorption Au@Ag@SiO2 nanocuboids (GSS NCs) as nanophotonic inclusions to achieve plasmon-enhanced DSSCs. These multiple-resonance absorptions arising from GSS NCs can be readily adjusted by altering their structures to complementarily match the absorption spectra of the dyes, especially in weak absorption zones. By subtly regulating the position of nanophotonic inclusions in the photoanodes, not only the plasmonic near-field enhancement but also far-field light scattering could be adequately developed to promote the light harvest and thus the efficiency of DSSCs. The resulting solar cells yield an average efficiency of 10.34%, with a champion value of 10.58%. The electromagnetic simulations are consistent with the experimental observations, further corroborating the synergistic effect of plasmonic improvement in these DSSCs.