Green and red upconversion luminescence in CeO{sub 2}:Er{sup 3+} powders produced by 785 nm laser
- Department of Physics, Zhejiang Normal University, Jinhua, Zhejiang 321004 (China)
CeO{sub 2}:Er{sup 3+} powders were prepared by Pechini type sol-gel method. The structural properties of CeO{sub 2}:Er{sup 3+} were studied by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectra. The results show that CeO{sub 2}:Er{sup 3+} has low phonon cutoff energy, which indicate that CeO{sub 2}:Er{sup 3+} may have high luminescent efficiency. The green and red upconverted luminescence spectra of Er{sup 3+} were investigated under excitation into the {sup 4} I {sub 9/2} level by 785 nm laser. The upconversion mechanisms were studied in detail through laser power dependence and Er{sup 3+} ions concentration dependence of upconverted emissions, and results show that excited state absorption and energy transfer process are the possible mechanisms for the upconversion. The upconversion properties indicate that CeO{sub 2}:Er{sup 3+} may be used in upconversion phosphors. - Graphical abstract: Upconversion spectra of Er{sup 3+} doped CeO{sub 2} powders with different Er{sup 3+} concentration:(a) 0.5% (b) 1% (c) 3% (d) 6%, ({lambda} {sub ex}=785 nm)
- OSTI ID:
- 21015628
- Journal Information:
- Journal of Solid State Chemistry, Vol. 180, Issue 1; Other Information: DOI: 10.1016/j.jssc.2006.10.003; PII: S0022-4596(06)00538-X; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
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