Preparation and luminescence properties of Ca 3(VO 4) 2: Eu 3+, Sm 3+ phosphor for light-emitting diodes
Rare-earth ions co-activated red phosphors Ca 3(VO 4) 2: Eu 3+, Sm 3+ were synthesized by modified solid-state reactions. The samples were characterized by X-ray powder diffractometer (XRD), energy-dispersive X-ray spectrometer (EDS), transmission electron microscopy (TEM) and luminescence spectrome...
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Published in | Materials science & engineering. B, Solid-state materials for advanced technology Vol. 172; no. 2; pp. 108 - 113 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
2010
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Subjects | |
Online Access | Get full text |
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Summary: | Rare-earth ions co-activated red phosphors Ca
3(VO
4)
2: Eu
3+, Sm
3+ were synthesized by modified solid-state reactions. The samples were characterized by X-ray powder diffractometer (XRD), energy-dispersive X-ray spectrometer (EDS), transmission electron microscopy (TEM) and luminescence spectrometer (LS). The results showed that the Eu–Sm system exhibits higher emission intensity than those of the Eu single-doped system and Sm separate-doped system under blue light. Samarium (III) ions are effective in broadening and strengthening absorptions around 467
nm. Furthermore, they exhibit enhanced luminescence emission. Luminescent measurements showed that the phosphors can be efficiently excited by ultraviolet (UV) to visible region, emitting a red light with a peak wavelength of 616
nm. The material has potential application as a phosphor for light-emitting diodes (LEDs). |
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ISSN: | 0921-5107 1873-4944 |
DOI: | 10.1016/j.mseb.2010.04.031 |