首页> 中文期刊> 《发光学报》 >HO3+单掺杂及其与Yb3+、Er3+共掺杂硼硅酸盐玻璃上转换发光的光谱分析

HO3+单掺杂及其与Yb3+、Er3+共掺杂硼硅酸盐玻璃上转换发光的光谱分析

         

摘要

A series of holmium ions doped borosilicate glass, including Ho3+ -doped, Ho3+/Er3+ -doped, Ho3+/Yb3+-doped and Ho3+/Yb3+/Er3+ -doped galss, have been prepared by high-temperature melting. The up-conversion excitation spectra and emission spectra of the samples decrease. The analysis result reveals that both the intensities of excitation spectra and emission spectra were weaken with the Ho3+ concentration. The spectral intensities of Ho3+/Yb3+ -doped borosilicate glass increase with the increase of Ho3+ concentration because of the sensitization of Yb3+. The excitation and emission spectra intensities of Ho3+/Yb3+/Er3+-doped borosilicate glass are weak, and the reason is the energy transfers from Ho3+ ions to Er3+ ions through energy resonant transfer process. Meanwhile the luminescence mechanism of broadband emission peaked at 550 nm is analyzed.%采用高温固相烧结法制备了HO3+单掺杂、HO3+/Yb3+共掺杂、HO3+/Er3+共掺杂和Ho3+/Yb3+/Er3+共掺杂等系列硼硅酸盐玻璃,测量了样品的激发光谱和发射光谱.结果表明:Ho3+单掺杂样品的激发光谱与发射光谱的强度随其浓度增加而逐渐减弱,原因是高浓度掺杂导致Ho3+离子产生猝灭效应;Ho3+/Yb3+共掺杂玻璃由于Yb3+离子的敏化作用,光谱强度增强;Ho3+/Yb3+/Er3+共掺杂样品中Ho3+离子向Er3+离子发生能量传递,Ho3+离子的激发光谱和发射光谱强度均减弱.同时讨论了峰值波长为550 nm宽带发射峰的发光机制.

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