A rare earth-free GaZnON phosphor prepared by combustion for white light-emitting diodes. Issue 7 (27th January 2015)

• Record Type: Journal Article
• Authors: Chouhan, Neelu; Lin, Chun Che; Hu, Shu-Fen; Liu, Ru-Shi
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 7(2015)
• Page Start: 1473
• Page End: 1479
• Publication Date: 2015-01-27
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c4tc02615b
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Rare earth-free phosphor GaZnON was synthesized by combustion of a unimolar mixture of metal oxides and urea, which can be used in WLEDs. Abstract : 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.