镧系离子掺杂的AgY(MoO4)2上转换荧光粉的形貌调控及其温敏性研究

Morphologic Regulation and Temperature Sensitivity of Lanthanide Ion Doped AgY(MoO4)2 Conversion Phosphors

在没有添加剂的条件下,仅通过一步水热法成功制备出AgY(MoO4)2:Yb^3+/Er^3+上转换微米材料,探讨了发光粒子浓度与发光强度关系和上转换发光机理.在980 nm近红外光激发下,AgY(MoO4)2:Yb^3+/Er^3+荧光粉的绿色发射(526 nm,551 nm)在298 K至573 K的温度区间展现了良好的温度依赖性,并在498 K处得出最大的灵敏度为0.01685 K^-1.表明该荧光材料在光学测温技术中具有潜在应用,可作为高温、高灵敏度的光学温度传感器.

In the absence of additives,AgY(MoO4)2:Yb^3+/Er^3+up-conversion micron materials were successfully prepared via one-step hydrothermal method.The relationship between the concentration of luminescent particles and luminous intensity and the mechanism of up-conversion luminescence were investigated.Under the near-infrared light excitation,the green emission(526 nm,551 nm)of AgY(MoO4)2:Yb^3+/Er^3+phosphors exhibit excellent temperature dependence in the temperature range from 298 K to 573 K.At 498 K,the maximum sensitivity measured was 0.01685 K^-1.The results indicate that the fluorescent material has potential applications in optical temperature measurement technology and can be used as a high temperature,high sensitivity optical temperature sensor.