二维组装金纳米颗粒上二氧化钛溅射膜的瞬态吸收

Toshihiko Takahata, S. Yanagiya, A. Furube
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引用次数: 0

摘要

在玻璃衬底上沉积了两层二氧化钛和金纳米粒子薄膜,测量了其消光光谱和瞬态吸收。采用湿法将金纳米粒子(AuNPs)沉积在硅烷处理过的玻璃表面,其表面等离子体共振(SPR)增强了玻璃的光吸收。在AuNP自组装上,采用磁控溅射沉积二氧化钛。在400 ~ 600 nm区域的吸收光谱表明,由于被TiO2薄膜包围,AuNP的等离子体带发生了红移。瞬态吸收研究证明,导电电子的寿命与二氧化钛层的膜厚有关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Transient absorption of titanium dioxide sputtered film deposited on two-dimensionally assembled gold nanoparticles
Two-layer film of titanium dioxide and gold nanoparticles was deposited onto glass substrate, and its extinction spectrum and transient absorption were measured. The gold nanoparticles (AuNPs) were deposited on silane-treated glass by wet process, which showed enhancement of optical absorption due to its surface plasmon resonance (SPR). On the AuNP self-assembly, the titanium dioxide was deposited by magnetron sputtering. The absorption spectra in the region of 400–600 nm suggested that the red-shift of plasmon band of the AuNP due to surrounding in the TiO2 film. Transient absorption study proved that the lifetime of the conductive electrons depended on the film thickness the of titanium dioxide layer.
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