Periodical silver nanoparticle (NP) arrays were fabricated by magnetron sputtering method with anodic aluminum oxide templates to enhance the UV light emission from ZnO by the surface plasmon resonance effect. Theoretical simulations indicated that the surface plasmon resonance wavelength depended on the diameter and space of Ag NP arrays. By introducing Ag NP arrays with the diameter of 40 nm and space of 100 nm, the photoluminescence intensity of the near band-edge emission from ZnO was twofold enhanced. Time-resolved photoluminescence measurement and energy band analysis indicated that the UV light emission enhancement was attributed to the coupling between the surface plasmons in Ag NP arrays and the excitons in ZnO with the improved spontaneous emission rate and enhanced local electromagnetic fields.

通过磁控溅射法和阳极氧化铝模板制备了周期性的银纳米粒子（NP）阵列，以通过表面等离子体共振效应增强ZnO的紫外线发射。理论模拟表明，表面等离子体共振波长取决于Ag NP阵列的直径和空间。通过引入直径为40 nm，间距为100 nm的Ag NP阵列，ZnO的近带边发射的光致发光强度提高了两倍。时间分辨的光致发光测量和能带分析表明，UV发光增强归因于Ag NP阵列中的表面等离子体与ZnO中的激子之间的耦合，具有提高的自发发射率和增强的局部电磁场。