Department of Materials Science and Engineering, National University of Singapore, Singapore 117576.
ACS Appl Mater Interfaces. 2013 Jun 26;5(12):5601-8. doi: 10.1021/am400914g. Epub 2013 Jun 4.
A facile and novel process modified from the Stöber method has been developed to prepare Au-SiO2 asymmetric clusters with a number of Au nanoparticles off-center. The Au-SiO2 asymmetric clusters exhibit the wanted surface plasmons along with increases in the plasmonic near field and optical extinction efficiency. They are incorporated into dye-sensitized solar cells (DSSCs) consisting of ZnO nanosheets as the photoanode, where the surface plasmonic effect on DSSCs performance arising from the Au-SiO2 asymmetric clusters is investigated. An enhancement in both the photocurrent and overall energy conversion efficiency is observed, arising from the improvement in light harvesting.
已开发出一种从 Stöber 方法修改而来的简便新颖的工艺，用于制备具有多个非中心 Au 纳米粒子的 Au-SiO2 不对称团簇。Au-SiO2 不对称团簇表现出所需的表面等离激元，同时增加了等离子体近场和光吸收效率。它们被掺入由 ZnO 纳米片作为光阳极的染料敏化太阳能电池 (DSSC) 中，研究了来自 Au-SiO2 不对称团簇的表面等离激元效应对 DSSC 性能的影响。由于光捕获的改善，观察到光电流和整体能量转换效率的提高。
