Transparent polyvinyl alcohol composite layer as well as preparation method and application of transparent polyvinyl alcohol composite layer

The invention discloses a transparent polyvinyl alcohol composite layer and belongs to the technical field of light enhanced materials. The transparent polyvinyl alcohol composite layer comprises a polyvinyl alcohol organic matter isolating layer located at a bottom layer and a silver nanoparticle layer located at an upper layer, and the silver nanoparticle layer is silver nanoparticles dispersedby polyvinylpyrrolidone. The invention further discloses a preparation method and application of the transparent polyvinyl alcohol composite layer to light enhancement of the silver nanoparticles. When the thickness of the polyvinyl alcohol organic matter isolating layer is 2-12 mu m and the thickness of the silver nanoparticle layer is 3.5-9 mu m, the maximum emitted light intensity of a yellow fluorescent powder matrix can be increased to 1.77 times. 本发明公开了聚乙烯醇透明复合层，属于光增强材料技术领域，其包括底层的聚乙烯醇有机物隔离层和上层的银纳米颗粒层，银纳米颗粒层为经聚乙烯吡咯烷酮分散的银纳米颗粒。本发明还公开了其制备方法和聚乙烯醇透明复合层在银纳米颗粒光增强中的应用。本发明的聚乙烯醇有机物隔离层的厚度为2～12μm，银纳米颗粒层的厚度为3.5μm～9μm时，能使黄色荧光粉