Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 653, Issue -, Pages 315-320Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2015.09.060
Keywords
Phosphor; Photoluminescence; K3Gd1-xEux(VO4)(2)
Categories
Funding
- Natural Science Foundation of Guangdong Province of China [S2013010013567, 7008121]
- Ministry of Education of China
- Ministry of Personnel of China
Ask authors/readers for more resources
Eu3+-activated novel potassium gadolinium double vanadates K3Gd(VO4)(2) phosphors have been synthesized via solid-state reaction. The crystal phase, surface morphology and photoluminescence properties of the phosphor were investigated. X-ray diffraction results demonstrate that K3Gd1-xEux(VO4)(2) has the monoclinic structure with the space group of p21/m(11). The emission spectra suggest that K3Gd1-xEux(VO4)(2) phosphors present an intense charge transfer band at 314 nm and a strong red emission of Eu3+ (D-5(0) -> F-7(2) transition) at 617 nm. The optimum doping concentration of Eu3+ ions in K3Gd1-xEux(VO4)(2) phosphors is around 50 mol% and the major mechanism for concentration quenching is the exchange interaction. The emitting light color of the phosphors can be tunable by varying excitation wavelength and a warm white light is achieved by the excitation at 337 nm. The luminescence properties suggest that the present phosphors may have potential applications as red and white emitting materials for w-LEDs in solid state lighting. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available