Novel NaYF₄:Yb³⁺, Er³⁺ nanocrystals containing phosphate glass with composition 83.25NaPO₃–9.25NaF-5ZnO-2.5Ag₂O (in mol%) was prepared by adding the NaYF₄:Yb³⁺, Er³⁺ nanocrystals in the glass using the direct doping method. The optical and luminescence properties of this new glass are presented and discussed. The newly developed glass exhibits visible emission under 980 nm pumping with high intensity confirming the presence of the NaYF₄:Yb³⁺, Er³⁺ nanocrystals in the glass. From the absorption spectrum of the as-prepared glass, it is showed that the as-prepared glasses contains already Ag nanoparticles which are thought to precipitate due to the decomposition of some of the NaYF₄:Yb³⁺, Er³⁺ nanocrystals occurring during the glass preparation. A heat treatment of the glass was found to lead to the migration of Ag species at the surface of the glass as evidenced using SEM and to a decrease of the intensity of the upconversion mostly due to an increase of the inter defects in the NaYF₄:Yb³⁺, Er³⁺ nanocrystals due to the heat treatment.

通过添加NaYF ₄：Yb ³⁺，Er ^3+来制备新型的NaYF ₄：Yb ³⁺，Er ³⁺含磷酸盐玻璃的纳米晶体，其组成为83.25NaPO ₃ –9.25NaF-5ZnO-2.5Ag ₂ O（mol％）。玻璃中的纳米晶体采用直接掺杂法。介绍和讨论了这种新型玻璃的光学和发光特性。新开发的玻璃在980 nm抽运下显示出高强度的可见光，这证实了玻璃中存在NaYF ₄：Yb ³⁺和Er ³⁺纳米晶体。从制备的玻璃的吸收光谱表明，制备的玻璃已经包含Ag纳米颗粒，据认为该Ag纳米颗粒由于NaYF ₄：Yb ³⁺，Er ³⁺纳米晶体在分解过程中发生的某些分解而沉淀。玻璃准备。使用SEM可以证明对玻璃进行热处理会导致Ag物质在玻璃表面的迁移，并导致上转换强度的降低，这主要是因为NaYF ₄的内部缺陷增加：由于热处理，Yb ³⁺，Er ³⁺纳米晶体。