Enhancement of the upconversion luminescence in Y2O3:Er3+ powders by codoping with La3+ ions

Ruoshan Lei; Huanping Wang; Shiqing Xu; Yin Tian; Lihui Huang

doi:doi:10.3788/COL201513.021602

Chinese Optics Letters, 2015, 13 (2): 021602, Published Online: Sep. 25, 2018

Enhancement of the upconversion luminescence in Y₂O₃:Er³⁺ powders by codoping with La³⁺ ions

Ruoshan Lei Huanping Wang Shiqing Xu ^*Yin Tian Lihui Huang

Author Affiliations

College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China

160.0160 Materials 230.0230 Optical devices 300.0300 Spectroscopy

Abstract

Infrared-to-visible upconverted luminescent spectra of Er3+ and La3+ codoped Y2O3 powders are investigated. By introducing La3+ ions, the upconversion green radiation is found to be greatly enhanced when compared with the powders with La3+ absent. Such enhancement can be attributed to the modification of the local symmetry surrounding the Er3+ ion, which benefits the intra-4f transitions of Er3+ ion, and the decreasing interaction between Er3+ ions, which suppresses the energy transfer process F7/24+I411/2→F49/2+F49/2

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Ruoshan Lei, Huanping Wang, Shiqing Xu, Yin Tian, Lihui Huang. Enhancement of the upconversion luminescence in Y₂O₃:Er³⁺ powders by codoping with La³⁺ ions[J]. Chinese Optics Letters, 2015, 13(2): 021602.