The photoluminescence properties of Y{sub 2}O{sub 3}:Eu{sup 3+} prepared by surfactant assisted co-precipitation-molten salt synthesis
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan 430074 (China)
- Faculty of Materials Science and Chemical Engineering, China University of Geosciences, Wuhan 430074 (China)
Y{sub 2}O{sub 3}:Eu{sup 3+} red phosphors were prepared by surfactant assisted co-precipitation-molten salt synthesis method. The effects of surfactant content and annealing temperature on the structure and luminescence were investigated by X-ray diffraction and fluorescence spectrophotometer. The use of surfactant reduces the impurities on the surface of particles and promotes the reaction. The color purity of as-prepared Y{sub 2}O{sub 3}:Eu{sup 3+} red phosphors is improved with the presence of surfactant. In the excitation spectra, two strong bands at 394 and 466 nm are attributed to {sup 7}F{sub 0,1}-{sup 5}L{sub 6}, {sup 7}F{sub 0,1}-{sup 5}D{sub 2} transitions of Eu{sup 3+} ions respectively. With the excitation of 394 or 466 nm, the as-fabricated samples reveal excellent red emission as high as that of samples monitored by 254 nm. Thus, the Y{sub 2}O{sub 3}:Eu{sup 3+} is a promising red phosphor for ultraviolet-visible light-emitting diodes.
- OSTI ID:
- 22202589
- Journal Information:
- Materials Research Bulletin, Vol. 45, Issue 5; 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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