In this paper technological aspects of preparation of silver nanostructures on garnet substrates and their impact on absorption and photoluminescence have been studied. For this purpose, the changes of plasmonic properties as a function of the Ag NPs preparation features, such as type of substrate material, sputtered silver mass thickness, temperature, and time of thermal treatments were shown. The plasmonic structures were prepared on single-crystalline YAG and GGG garnets as well as amorphous glass substrates by the magnetron sputtering technique. Nucleation and growth of Ag nanoparticles were controlled by a thermal annealing process. Two broad absorption bands peaked at 350–370 nm and 440–650 nm were observed due to quadrupole and dipole modes, respectively, of surface plasmon resonance (SPR) of Ag nanoparticles. Changes of the positions, intensities, and widths of these absorption bands related to the nanoparticle sizes, densities, and shapes are presented. Degradation of the plasmonic structures at ambient conditions, which is revealed as diminishing of the plasmonic absorption bands and associated with sulphidation of Ag nanoparticles in the natural environment, was studied in details. Theoretical simulations of the sulphidation process modelled as coating of Ag nanoparticles with silver sulphide (Ag₂S) film confirm the experimentally observed diminishing of SPR.

在本文中，研究了在石榴石衬底上制备银纳米结构及其对吸收和光致发光的影响的技术方面。为此目的，示出了等离子体性能随AgNPs制备特征而变化的特征，例如基底材料的类型，溅射的银质量厚度，温度和热处理时间。通过磁控溅射技术在单晶YAG和GGG石榴石以及无定形玻璃基板上制备了等离子体结构。Ag纳米颗粒的成核和生长通过热退火工艺来控制。分别由于银纳米粒子的表面等离子体激元共振（SPR）的四极模式和偶极模式，观察到两个在350-370 nm和440-650 nm处达到峰值的宽吸收带。职位变动，提出了与纳米颗粒尺寸，密度和形状有关的这些吸收带的强度和宽度。详细研究了在环境条件下等离子体结构的降解，这表现为等离子体吸收带的减少以及与银纳米颗粒在自然环境中的硫化有关。硫化过程的理论模拟，建模为用硫化银（Ag₂ S）膜证实了实验观察到的SPR减小。