Based on the local surface plasmon resonance effect of Ag nanolayer, the luminescence enhancement in the visible light range of multilayer thin film has been investigated combined with metal/spacer molecule/photoluminescence material structure. The luminescence enhancement effect of multilayer thin films can be improved by adjusting the spin-coating number of Ag nanolayer and SiO spacer in the multilayer structure. At the same time, the mechanism of enhanced luminescence has been analyzed according to the change in fluorescence lifetime. The effect of the coupling between Ag nanolayer and luminescence layer on the radiative transition rate and fluorescence quantum yield have been discussed. The up-conversion luminescence intensity of the noble metal-modified multilayer thin film can be further improved by combining the multilayer structure with sensitized layer.

中文翻译：

---

基于Ag纳米层LSPR效应的Y2O3薄膜发光增强

基于Ag纳米层的局域表面等离子体共振效应，结合金属/间隔分子/光致发光材料结构，研究了多层薄膜在可见光范围内的发光增强。通过调节多层结构中Ag纳米层和SiO间隔物的旋涂数量，可以提高多层薄膜的发光增强效果。同时，根据荧光寿命的变化分析了增强发光的机理。讨论了Ag纳米层与发光层之间的耦合对辐射跃迁速率和荧光量子产率的影响。通过将多层结构与敏化层相结合，可以进一步提高贵金属修饰多层薄膜的上转换发光强度。