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Preparation and Characteristics of CaNaMgVO:Sm Single-Phased White-Emitting Phosphors.
- Source :
- Journal of Inorganic & Organometallic Polymers & Materials; May2013, Vol. 23 Issue 3, p684-689, 6p
- Publication Year :
- 2013
-
Abstract
- Novel single-phased phosphors CaNaMg-VO:xSm that exhibit efficient white-light photoluminescence properties have been successfully synthesized by the solid-state reaction method. The formation of a single CaNaMgVO phase has been confirmed by X-ray powder diffraction (XRD). The wavelength-tunable white light is realized by coupling of the broad emission band at 500 nm due to a V−O charge-transfer state transition and the sharp emission peaks at 564, 616, 650 and 708 nm assigned to G→H (J = 5/2, 7/2, 9/2, 11/2) transitions of the Sm ion. The luminescence color can be tuned from green to white by adjusting the doping concentration of Sm. When the doping concentration of Smis increased from x = 0 to x = 0.20, the color rendering index of the CaNaMgVO:xSm phosphors increased from 55 to 83. The present white phosphors show a great potential for white LEDs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15741443
- Volume :
- 23
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of Inorganic & Organometallic Polymers & Materials
- Publication Type :
- Academic Journal
- Accession number :
- 86976652
- Full Text :
- https://doi.org/10.1007/s10904-013-9833-x