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- Title
Preparation and investigation of Eu-activated ZnMoO phosphors for white LED.
- Authors
Hu, Daqiang; Huan, Weiliang; Wang, Ying; Wang, Yandong
- Abstract
Eu-doped ZnMoO red phosphors with different doping concentrations were synthesized at the temperature of 800 °C by solid-state reaction technique in air atmosphere. The structures of the phosphors were characterized by X-ray diffraction and Raman spectra. The excitation and emission spectra were used to investigate the photoluminescent properties of the phosphors. The effect of Eu concentration on the structural and photoluminescent properties of ZnMoO:Eu red phosphors were discussed systemically. And the photoluminescent properties of ZnMoO:Eu red phosphors under different excitation wavelengths were investigated to find their utilities in various lighting applications. Strong red emission intensity and high color purity with chromaticity coordinates (0.666, 0.334) were obtained for ZnMoO:0.2Eu phosphors excited at 395 nm. The ZnMoO:xEu phosphors, which could be applied as red-emitting phosphors excited by ultra-violet and blue chips, have potential application in white light-emitting diodes.
- Subjects
SOLID state physics; PHOSPHORS; X-ray diffraction; RAMAN spectra; PHOTOLUMINESCENCE; LIGHT emitting diodes
- Publication
Journal of Materials Science: Materials in Electronics, 2015, Vol 26, Issue 9, p7290
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-015-3356-x