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Reduction of Ce(IV) to Ce(III) induced by structural characteristics and performance characterization of pyrophosphate MgIn2P4O14-based phosphors
- Source :
- Journal of Luminescence. 203:590-598
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- Due to the high sensitivity of the unshielded 5d orbit to the host environment, Ce3+ has a wide-spread emission ranging from near ultraviolet to the red light region, making it a favorable choice for being UV-emitting phosphor activator and sensitizer of other co-doped lanthanide ions in luminescent materials. In present work, Ce4+→Ce3+ self-reduction phenomenon in the layered phosphate MgIn2P4O14 was observed. Noting that self-reduction ability is a valuable characteristic of new host materials, a new viewpoint underlying mechanism was put forward. Structure-, composition-, and temperature-dependence of photoluminescence of the new UV-emitting MgIn2P4O14: Cex phosphors were investigated, with the relative mechanism discussed. Moreover, the sensitization of Dy3+ by Ce3+ was observed in Ce3+/Dy3+ co-doped MgIn2P4O14 phosphors. The excitation region of Dy3+ in MgIn2P4O14: CeDy (220–460 nm) is markedly broadened compared to that of the Dy3+ single-doped phosphor (270–460 nm) on account of the Ce3+→Dy3+ energy transfer process. Present work shows that the MgIn2P4O14: CeDy phosphor can be promising phosphor using for fabrication of both light-emitting diodes (LEDs) and fluorescent lamps (FLs).
- Subjects :
- Lanthanide
Materials science
Photoluminescence
Biophysics
Phosphor
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Photochemistry
01 natural sciences
Biochemistry
Fluorescence
Atomic and Molecular Physics, and Optics
0104 chemical sciences
law.invention
Ion
law
Activator (phosphor)
0210 nano-technology
Luminescence
Light-emitting diode
Subjects
Details
- ISSN :
- 00222313
- Volume :
- 203
- Database :
- OpenAIRE
- Journal :
- Journal of Luminescence
- Accession number :
- edsair.doi...........9524273bc8b127889e9654b41ce138b1