Photoluminescence from Au nanoparticles embedded in Au:oxide composite films
Photoluminescence from Au nanoparticles embedded in Au:oxide composite films
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DOI：
10.1364/josab.23.002518
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发表时间：
2006-12-01
影响因子：
1.9
通讯作者：
Wong, George K. L.
中科院分区：
文献类型：
--
作者：
Liao, Hongbo;Wen, Weijia;Wong, George K. L.
采用磁控溅射法制备了Au：氧化物复合多层膜，其中氧化物层（如SiO2、ZnO和TiO2）夹着Au纳米颗粒。采用波长为514 nm的氩激光作为泵浦光，利用显微拉曼系统研究了它们的光致发光（PL）谱。在我们的大多数样品中观察到位于590和680 nm之间的波长范围内的明显PL峰，Au颗粒尺寸从几纳米到几百纳米不等。结果表明，复合材料中的表面等离子体共振（SPR）对发光峰的位置有很大的影响，但对发光强度影响不大。(c)2006年美国光学学会。
Au:oxide composite multilayer films with Au nanoparticles sandwiched by oxide layers (such as SiO2, ZnO, and TiO2) were prepared in a magnetron sputtering system. Their photoluminescence (PL) spectra were investigated by employing a micro-Raman system in which an Argon laser with a wavelength of 514 nm was used as the pumping light. Distinct PL peaks located at a wavelength range between 590 and 680 nm were observed in most of our samples, with Au particle size varying from several to hundreds of nanometers. It was found that the surface plasmon resonance (SPR) in these composites exerted a strong influence on the position of the PL peaks but had little effect on the PL intensity. (c) 2006 Optical Society of America.