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采用熔融退火法制备了Er~(3+)/Yb~(3+)共掺复合银(Ag)纳米颗粒的铋锗酸盐玻璃,对玻璃样品进行物理性质、透射电镜(TEM)图像和光谱性能测试,分析了铋锗酸盐玻璃样品中Er~(3+)的上转换发光机理。研究表明:随着退火温度的增加,Ag纳米颗粒不断析出,绿光(527和548nm波长)和红光(661nm波长)发光强度都得到了较大增强,在420℃时,上转换发光强度分别为未掺杂AgCl时的4.45、5.97和4.22倍。其上转换发光增强的原因归结于Ag纳米颗粒表面等离子体共振(SPR)导致局域场电场增强和Ag~0→Er~(3+)的能量转移。
Bismuth germanate glass doped with Er 3+ / Yb 3+ co-doped silver nanoparticles was prepared by melt annealing. The physical properties, transmission electron microscopy (TEM) images and spectra Performance test, the up-conversion luminescence mechanism of Er ~ (3+) in bismuth germanate glass samples was analyzed. The results show that with the increase of annealing temperature, the Ag nanoparticles are continuously precipitated, and the luminescence intensities of green light (527 and 548nm wavelength) and red light (661nm wavelength) are greatly enhanced. At 420 ℃, the upconversion luminescence intensity 4.45, 5.97 and 4.22 times when undoped AgCl. The reason for the up-conversion luminescence enhancement is attributed to the increase of the local electric field and the energy transfer of Ag ~ 0 → Er ~ (3+) due to the surface plasmon resonance (SPR) of the Ag nanoparticles.