Composition dependence of the Yb-participated strong up-conversions in polycrystalline ErYb silicate
Composition dependence of the Yb-participated strong up-conversions in polycrystalline ErYb silicate
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DOI：
10.1016/j.optmat.2012.02.001
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发表时间：
2012-06
影响因子：
3.9
通讯作者：
B. Wang;R. Guo;Xingjun Wang;Lei Wang;Zhiping Zhou
中科院分区：
文献类型：
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作者：
B. Wang;R. Guo;Xingjun Wang;Lei Wang;Zhiping Zhou
采用溶胶-凝胶法制备了ErxYb 2 − xSiO 5（x=0，0.2，0.5，1，2）多晶粉末，并通过1200°C退火进行晶化。通过X射线衍射测量揭示了晶体结构随组成的变化。在974 nm和650 nm激光激发下，观察到强烈的Er可见光和红外发光。Yb参与的强Er上转换在可见光范围内表现出不同的绿色到红色的发射比为不同的Er浓度的样品。Yb对Er的稀释作用是提高1.53μm光致发光寿命的主要原因。预测了不同泵浦波长下ErYb硅酸盐的潜在应用。
Polycrystalline ErxYb2−xSiO5(x=0, 0.2, 0.5, 1, 2) powders were fabricated by sol–gel method and crystallized by 1200°C annealing. The crystal structure variation as a function of composition was revealed by X-ray diffraction measurement. Intense Er visible and infrared luminescence was observed using 974nm and 650nm laser excitation. Yb-participated strong Er up-conversions in the visible range show different Green to Red emission ratios for the different Er concentrations samples. The dilution of Er by Yb was responsible for the increase of the 1.53μm photoluminescence lifetime. The potential applications of the ErYb silicate were predicted under different pumping wavelengths.