氟化锆基质材料中单掺Yb3+的上转换特性

在众多的稀土掺杂氧化物、氟化物或氟氧化物基质材料的能量上转换研究当中，Yb^3 单独掺杂的能量上转换研究在国内报道的很少。这是因为，研究者们普遍都认为Yb^3 只是一种良好的敏化剂，主要起能量转移作用。采用固相合成法，稀土Yb单独掺杂ZrF4基质材料，在1200℃烧结合成了粉末样品。样品用功率为几mW的半导体红外激光980nm激发，肉眼就可看到上转换的明亮的红光。在实验室用功率为几十mW的半导体红外激光980nm激发，用光谱仪测量到红、绿、蓝及紫4个波段的上转换荧光光谱，其波峰在412，478，558，671nm波长处，实验反复验证，认为上转换来自Yb^3 的准能级向Yb^3 基态^2F7／2的跃迁。

The Properties of Energy Upconversion of Yb3+-Doped Materials Based on ZrF4

There have been few reports on studies of energy upconversion from Yb~3+ -doped materials based on oxide, fluoride or oxyfluoide, because researches commonly considered that Yb~3+ was only a good sensibilizer. This paper reports the properties of energy upconversion of Yb~3+ -doped materials based on ZrF_4. The rare earth Yb~3+ was doped in the ZrF_4 glass under the specific condition. ~Using 980 nm laser as an excitation light, the upconversion fluorescence spectra of the sample were measured, and the red band, green band, blue band and purple band observed, respectively. The peaks were at 412, 478, 558 and 671 nm, respectively. This paper reports the upconversion from Yb~3+ standard energy level to Yb~3+ energy level ~ 2F_~7/2 .