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Start Over Author "Qunhuo Liu" Publisher the optical society
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1. Broadening and enhancing 27 μm emission spectra in Er/Ho co-doped oxyfluoride germanosilicate glass ceramics by imparting multiple local structures to rare earth ions

Author

Qunhuo Liu, Junjie Zhang, Wenhua Tang, Feifei Huang, Xufeng Jing, Shiqing Xu, and Ying Tian

Subjects
Range (particle radiation), Materials science, Infrared, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Atomic and Molecular Physics, and Optics, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Dipole, Nanocrystal, visual_art, Rare earth ions, X-ray crystallography, visual_art.visual_art_medium, Physical chemistry, Emission spectrum, Ceramic, 0210 nano-technology
Abstract

Er/Ho co-doped oxyfluoride germanosilicate glass and glass ceramics are prepared and compared. The results indicate that the glass consists of SiO4 and GeO4 structural units, while the network of the glass ceramics consists of SiO4, GeO4, and GeO6 units together with NaYF4 nanocrystals. The presence of multiple local structures in glass ceramics creates a range of dipole environments, which is beneficial to the broadening of 2.7 μm emission. Two other reasons are attributed to the broadening of 2.7 μm emission in glass ceramics: the energy-level splitting of Er3+ and the enhancement of the Ho3+:I65→I75 transition in NaYF4 nanocrystals.

Published
2018
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