摘要
采用高温固相烧结法制备了Ho^(3+)单掺杂、Ho^(3+)/Yb^(3+)共掺杂、Ho^(3+)/Er^(3+)共掺杂和Ho^(3+)/Yb^(3+)/Er^(3+)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:Ho^(3+)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Ho^(3+)离子产生猝灭效应;Ho^(3+)/Yb^(3+)共掺杂玻璃由于Yb^(3+)离子的敏化作用,光谱强度增强;Ho^(3+)/Yb^(3+)/Er^(3+)共掺杂样品中Ho^(3+)离子向Er^(3+)离子发生能量传递,Ho^(3+)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550nm宽带发射峰的发光机制。
A series of holmium ions doped borosilicate glass,including Ho（3＋）-doped,Ho（3＋）/Er（3＋）-doped,Ho（3＋）/ Yb（3＋）-doped and Ho（3＋）/Yb（3＋）/Er（3＋）-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 Ho（3＋）concentration.The spectral intensities of Ho（3＋）/Yb（3＋）-doped borosilicate glass increase with the increase of Ho（3＋）concentration because of the sensitization of Yb（3＋）.The excitation and emission spectra intensities of Ho^（3＋）/Yb^（3＋）/Er^（3＋）-doped borosilicate glass are weak,and the reason is the energy transfers from Ho^（3＋）ions to Er^（3＋）ions through energy resonant transfer process.Meanwhile the luminescence mechanism of broadband emission peaked at 550 nm is analyzed.
出处
《发光学报》
EI
CAS
CSCD
北大核心
2011年第5期433-439,共7页
Chinese Journal of Luminescence
基金
国家自然科学基金(11004092)
辽宁省教育厅项目(2009A417)资助项目
