Up-conversion luminescence of Er3+ ions in transparent oxyfluoride glass ceramics containing Na(Gdx, Y1-x)F4 nanocrystals

作者：Ren, Peng; Gao, Yuan; Hu, Yuebo; Yang, Yong; Zhou, Dacheng; Qiu, Jianbei^*

来源：Materials Research Bulletin, 2017, 85: 47-51.

DOI：10.1016/j.materresbull.2016.09.002

• Glasses
• Optical materials
• Luminescence
• Optical properties
• Crystal growth

Na(Gd-x,Y1-x)F-4(x=0, 0.3, 0.5, 0.7 and 1) solid-solution nanocrystals precipitated from glasses were prepared for the first time by conventional melting-quenching technique and subsequent heat treatment. Using Er3+ as a structural probe, the partition of lanthanide activators into the Na(Gd-x,Y1-x)F-4 lattice was evidenced. The types and distribution of crystallite were determined by XRD, TEM. We also studied the upconversion luminescence property of Er3+ in Na(Gd-x,Y1-x)F-4. The atomic radius plays an important role in luminescence properties of substitution solid solubility. The atomic radius of Er is more closer to Gd compared with Y through our theoretical calculation, which resulted that Er ions replace Gd ions from NaGdF4 is easier than Er ions replaced Y from NaYF4. Therefore, the intensity of emission can be enhanced significantly when the precipitation crystal from NaYF4 turn into NaGdF4.

• 出版日期2017-1
• 单位昆明理工大学