在AgNO3溶液中超声辐照石英基板,然后在200至800摄氏度之间的高温(T-a)在氮气气氛中进行后退火。超声波和热处理。 观察到由Ag团簇上的局部表面等离子体激元(LSP)诱导的吸收光谱。 最突出的吸收发生在Ta = 400摄氏度。从Ta = 200到400摄氏度,SiO2上的AgNO3经历热分解,Ag团簇形成和成熟。 从Ta = 600至800℃,形成Ag氧化物纳米环。 将LSPs应用于掺杂Si纳米晶体的SiO2(Si-NC:SiO2)薄膜可增强Si-NCs的光致发光(PL),在Ta = 400摄氏度下可获得最大3.6倍的增强。PL增强归因于LSP场耦合到Si-NC的激子偶极矩。
2021-11-08 10:33:42 1.55MB Surface plasmon; Silicon nanocrystal;
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The response time and transmittivity of the magnetic fluid (MF) for different concentrations at room temperature were investigated in this letter. The volume fraction of the investigated sample ranged from 0.44% to 6.47%. It was found that the transmittivity decreased with increasing concentration u
2021-02-10 16:05:24 379KB 磁流体 响应时间 透射 160.3820
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