Study on Preparation and Luminescence Performance of SrMoO4:Eu3+ Fluorescent Powder Used in White-light LED

doi:10.3969/j.issn.1000-1093.2012.11.005

Abstract

Abstract: Eu³⁺-doped SrMoO₄ red fluorescent powder which matches well with UV and blue light emitting diodes (LED) were prepared by using hydrothermal route. The samples were characterized with X-ray diffraction (XRD), field environmental scanning electron microscopy (FESEM) and photoluminescence (PL) spectroscopy. The results of XRD are in agreement with the standard PDF # 85-809; the FESEM images show the morphology of the samples sintered under different temperatures; the main emission peak of the sample excited by ultraviolet or blue light is at 616 nm. It is investigated that the luminescent properties of the samples have some relationship with the doping concentration of Eu³⁺ and the critical concentration of Eu³⁺ is 7%. The critical sintering temperature is found to be 600 ℃. The sample’s properties can be improved by introducing different compensation charges, and the luminescent intensity of the sample is maximum when using K⁺ as the compensation charge. The color coordination of SrMoO₄:Eu³⁺, K⁺ is (0.59, 0.40), and it can be used as the red fluorescent material for white LEDs.

Key words: materials synthesis and processing technology, hydrothermal route, molybdate, luminescence, white light emitting diode

CLC Number:

TG156

ZHANG Chi-jun, LI Xi-lin, LONG Dan-dan, ZHANG Qing-xia, YAN Jing-hui, KANG Zhen-hui. Study on Preparation and Luminescence Performance of SrMoO₄:Eu³⁺ Fluorescent Powder Used in White-light LED[J]. Acta Armamentarii, 2012, 33(11): 1303-1309.

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Study on Preparation and Luminescence Performance of SrMoO₄:Eu³⁺ Fluorescent Powder Used in White-light LED

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