Department of Chemistry, National Chung Hsing University , Taichung 40227, Taiwan, Republic of China.
ACS Appl Mater Interfaces. 2015 Jan 28;7(3):1892-8. doi: 10.1021/am507668j. Epub 2015 Jan 16.
A new 3D TNW-AuNP plasmonic electrode consists of antireflective (AR) TiO2 nanowires (TNWs) (∼600 nm thickness) serving as light-harvesting antennae coupling with Au nanoparticles (NPs). A huge red-shift of 55 nm is observed in surface plasmon spectra for the Au (11 nm) plasmonic electrode that has 11 nm size Au NPs, whereby (111) lattice planes have a specific bonding with the TiO2 (101) planes. Remarkable red-shift is mainly attributed to the localized electric field improvement resulting from the plasmonic coupling effect between the Au NPs and the Au-TiO2 hybrids. After TiCl4 treatment, this favorable Au (11 nm) nanostructure takes advantage of harvesting photons to increase the conversion efficiency of dye-sensitized solar cells (DSSCs) from 6.25% to 9.73%.
一种新型的 3D TNW-AuNP 等离子体电极由具有抗反射（AR）性能的 TiO2 纳米线（TNW）（约 600nm 厚）组成，作为光捕获天线与 Au 纳米颗粒（NPs）耦合。在 Au（11nm）等离子体电极的表面等离子体光谱中观察到 55nm 的巨大红移，其中 Au（11nm）尺寸的 Au NPs 的（111）晶格平面与 TiO2（101）平面具有特定的键合。显著的红移主要归因于等离子体耦合效应导致的局域电场增强，这种效应发生在 Au NPs 和 Au-TiO2 杂化之间。经过 TiCl4 处理后，这种有利的 Au（11nm）纳米结构利用收集光子，将染料敏化太阳能电池（DSSC）的转换效率从 6.25%提高到 9.73%。
