Preparation and luminescent properties of Sr0.8-xBaxEu0.2WO4 red phosphors for white LED | Zendy

毛金伟 MAO Jin-wei | Zendy; Shuchen Lü | Zendy; Xiurong Qu | Zendy; 何冬丽 HE Dong-li | Zendy; Meng Qing-Yu | Zendy

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Preparation and luminescent properties of Sr0.8-xBaxEu0.2WO4 red phosphors for white LED

Author(s) -

毛金伟 MAO Jin-wei,

Shuchen Lü,

Xiurong Qu,

何冬丽 HE Dong-li,

Meng Qing-Yu

Publication year - 2013

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.62.037803

Subject(s) - phosphor , materials science , luminescence , tetragonal crystal system , doping , crystal structure , excited state , emission intensity , analytical chemistry (journal) , crystal (programming language) , optoelectronics , crystallography , chemistry , atomic physics , physics , chromatography , computer science , programming language

Sr0.8-xBaxEu0.2WO4 red phosphors with different Ba2+ doping concentrations is prepared by the co-precipitation method at different sintering temperatures. We study the influences of the crystal orientation and lattice distortion of the samples on the luminescence property. The results show that the Sr0.8-xBaxEu0.2WO4 synthesized by the process has a phase with tetragonal structure and that the red emission 5D0-7F2 of Eu3+ in the sample can be excited effectively by the near-UV light and blue light. The part of Sr2+ replaced with Ba2+ leads to the increase in emission intensity of Sr0.8-xBaxEu0.2WO4. The doping concentration of Ba2+ has a great influence on the crystal parameter, the crystal symmetry and the luminescent property. The optimized doping concentration of Ba2+ is found to be 30%.

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