含β-PbF2纳米晶体的Tm3+/Yb3+共掺杂氟氧化物微晶玻璃中的强蓝光上转换发光
Intense blue up-conversion luminescence in Tm3+/Yb3+ codoped oxyfluoride glass-ceramics containing beta-PbF2 nanocrystals.
作者信息
Zhang Junjie, Duan Zhongchao, He Dongbing, Dai Shixun, Zhang Liyan, Hu Lili
机构信息
Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, The Laboratory for Laser Glass, Shanghai 201800, China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2005 Dec;62(4-5):831-4. doi: 10.1016/j.saa.2005.03.011. Epub 2005 Aug 10.
Up-conversion luminescence properties of a Tm3+/Yb3+ codoped oxyfluoride glass-ceramics under 980 nm excitation are investigated. Intense blue emission centered at 476 nm, corresponding to 1G4-->3H6 transitions of Tm3+ was simultaneously observed in the transparent oxyfluoride glass ceramics at room temperature. The intensity of the blue up-conversion luminescence in a 1 mol% YbF3-containing glass-ceramic was found to be about 40 times stronger than that in the precursor oxyfluoride glass. The reason for the intense Tm3+ up-conversion luminescence in the oxyfluoride glass-ceramics is discussed. The dependence of up-conversion intensities on excitation power and possible up-conversion mechanism are also evaluated.
研究了Tm3+/Yb3+共掺杂氟氧化物微晶玻璃在980 nm激发下的上转换发光特性。室温下，在透明氟氧化物微晶玻璃中同时观察到了以476 nm为中心的强烈蓝光发射，对应于Tm3+的1G4-->3H6跃迁。发现在含有1 mol% YbF3的微晶玻璃中，蓝色上转换发光强度比前驱体氟氧化物玻璃中的约强40倍。讨论了氟氧化物微晶玻璃中Tm3+强烈上转换发光的原因。还评估了上转换强度对激发功率的依赖性以及可能的上转换机制。
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