A rare earth-free GaZnON phosphor prepared by combustion for white light-emitting diodes

Nanophosphor GaZnON was synthesized by combustion using a unimolar mixture of metal oxides and urea as a flux/combustible agent at varying temperature and time; the resulting products crystallized in a single monoclinic phase and had broad PLE spectra (300–550 nm at λ ex = 350 nm) with the character...

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Bibliographic Details
Published in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2015-01, Vol.3 (7), p.1473-1479
Main Authors: Chouhan, Neelu, Lin, Chun Che, Hu, Shu-Fen, Liu, Ru-Shi
Format: Article
Language:English
Subjects:
Combustion
Crystallization
Devices
Electron transitions
Flux
Light-emitting diodes
Metal oxides
Nanostructure
Phosphors
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Summary:Nanophosphor GaZnON was synthesized by combustion using a unimolar mixture of metal oxides and urea as a flux/combustible agent at varying temperature and time; the resulting products crystallized in a single monoclinic phase and had broad PLE spectra (300–550 nm at λ ex = 350 nm) with the characteristic blue emission that can be utilised in white light-emitting diodes by adding them with red and green light-emitting phosphors and by using a UV LED ( λ ex = 300 nm). Phosphors were examined according to respective package parameters. The blue light-emitting phosphor GaZnON was found to have excellent potential in white light-emitting diode devices by assimilating them with already viable red and green light-emitting phosphors and by stimulating them using a near-UV LED chip with wavelength λ ex = 300 nm. The possible electron transition mechanism responsible for the luminescence process is also discussed based on the experimental data.
ISSN:2050-7526
2050-7534
DOI:10.1039/C4TC02615B