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Investigations of the effect of trivalent erbium concentration on orthophosphate powder for green and yellow-orange light emitting phosphor
- Source :
- Journal of Luminescence. 212:368-373
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Lately, interesting features of lighting Rare Earths doped phosphorus have gained much attention and became favorite research matter among various groups of scientists. In this context, polycrystalline powders of Na3La(PO4)2: Er (0%, 2,5%) have been prepared by the solid state method. Powder X-ray diffraction, infrared spectroscopy have been used to identify these materials. The spectroscopic properties of Na3La(PO4)2: Er (2,5%) have been investigated through absorption, excitation, emission spectra and decay curves of Er3+ at room temperature. The decay time reveal that Na3La(PO4)2: Er (2,5%) possesses a radiative transition and the lifetime value for the transition 4F9/2 → 4I15/2 is found equal to 144.92 μs. All obtained results have been presented, compared and discussed with last reported works. The CIE chromaticity coordinates have been highlighted. They reveal that Na3La(PO4)2: Er (2,5%, 10%, 20% and 50%) phosphor can be a promising green and yellow-orange luminophore for application in LED.
- Subjects :
- Materials science
Biophysics
Analytical chemistry
chemistry.chemical_element
Infrared spectroscopy
Phosphor
Context (language use)
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Biochemistry
Atomic and Molecular Physics, and Optics
0104 chemical sciences
Erbium
chemistry.chemical_compound
chemistry
Luminophore
Emission spectrum
Chromaticity
0210 nano-technology
Absorption (electromagnetic radiation)
Subjects
Details
- ISSN :
- 00222313
- Volume :
- 212
- Database :
- OpenAIRE
- Journal :
- Journal of Luminescence
- Accession number :
- edsair.doi...........67d9ebaf166c459c6e8846b35b0fb9f5