Photoluminescence properties of NaGd(MoO{sub 4}){sub 2}:Eu{sup 3+} nanophosphors prepared by sol-gel method
- School of Material and Chemistry Engineering, Jiangxi University of Science and Technology, Hongqi Road 86, Ganzhou, Jiangxi 341000 (China)
NaGd(MoO{sub 4}){sub 2}:Eu{sup 3+} (hereafter NGM:Eu) phosphors have been prepared by sol-gel method. The properties of the resulting phosphors are characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), photoluminescence (PL) spectra and decay curve. The excitation spectra of NGM:Eu phosphors are mainly attributed to O {yields} Mo charge-transfer (CT) band at about 282 nm and some sharp lines of Eu{sup 3+} f-f transitions in near-UV and visible regions with two strong peaks at 395 and 465 nm, respectively. Under the 395 and 465 nm excitation, intense red emission peaked at 616 nm corresponding to {sup 5}D{sub 0} {yields} {sup 7}F{sub 2} transition of Eu{sup 3+} are observed for 35 at.% NGM:Eu phosphors as the optimal doping concentration. The luminescence properties suggest that NGM:Eu phosphor may be regarded as a potential red phosphor candidate for near-UV and blue light-emitting diodes (LEDs).
- OSTI ID:
- 22207369
- Journal Information:
- Materials Research Bulletin, Vol. 45, Issue 9; Other Information: Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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