利用溶胶—凝胶方法制备了Er3+和Yb3+共掺杂的Y2O3纳米荧光粉。 采用Er3+的2H11/2→4I15/2和4S3/2→4I15/2绿色上转换荧光强度比的方法, 研究了由980 nm二极管激光器泵浦所导致的荧光粉样品表面温升现象。 结果表明, 随着泵浦功率的增加, 样品表面温度大幅度上升, 当功率达到1 000 mW时, 样品表面的温度达到820 K。 该现象对分析稀土离子上转换过程中所出现的功率饱和现象起着重要的作用, 并且在高温传感材料、 医学生物细胞烧孔方面有着广阔应用前景。

The Er3+ and Yb3+ doped Y2O3 Nano powder was prepared by sol-gel method. Based on 2H11/2→4I15/2 and 4S3/2→4I15/2 green conversion luminescence intensity rate of Er3+, the sample surface temperature changes caused by the increase in 980 nm diode laser pump power were studied. The results show that with pump power increasing, the sample surface temperature substantially rises. And the surface temperature reached to 820 K when the pump power was 1 000 mＷ. The phenomenon plays an important role in the analysis of upconversion process, especially with saturation power. And this feature has a potential application prospect in the biomedicine, soft tissue hole burning as well as the field of temperature sensing materials.