A novel red emitting phosphor Ca{sub 2}SnO{sub 4}: Eu{sup 3+}
- Department of Chemistry, School of Chemistry and Chemical Engineering, State Key Laboratory of Optoelectronic Materials and Technologies, Zhongshan (Sun Yat-sen) University, Guangzhou city, Guangdong Province 510275 (China)
A novel red emitting phosphor, Eu{sup 3+}-doped Ca{sub 2}SnO{sub 4}, was prepared by the solid-state reaction. X-ray powder diffraction (XRD) analysis confirmed the formation of Ca{sub 2}SnO{sub 4}: Eu{sup 3+}. Field-emission scanning electron-microscopy (FE-SEM) observation indicated a narrow size-distribution of about 500nm for the particles with spherical shape. Photoluminescence measurements indicated that the phosphor exhibits bright red emission at about 615nm under UV excitation. The excellent luminescence properties make it possible as a good candidate for plasma display panels (PDP) application. Splitting of the {sup 5}D{sub 0}-{sup 7}F{sub J} transitions of Ca{sub 2}SnO{sub 4}: Eu{sup 3+} suggests that the Eu{sup 3+} ions occupied two nonequivalent sites in the crystallite. The luminescence lifetime measurement showed a bi-exponential decay, providing other evidence for the existence of two different environments for Eu{sup 3+} ions.
- OSTI ID:
- 20725854
- Journal Information:
- Journal of Solid State Chemistry, Vol. 178, Issue 3; Other Information: DOI: 10.1016/j.jssc.2004.12.022; PII: S0022-4596(04)00671-1; Copyright (c) 2004 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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