Preparation and Luminescence Properties of SrMoO₄ Doped with Pr³⁺

Abstract:

A red light-emitting phosphor of SrMoO₄: Pr³⁺ was synthesized by a convenient high-temperature solid-state reaction method. The structures, morphologies and optical properties of as-prepared products were characterized by X-ray diffraction (XRD), transmission electron microscope (FESEM) and photoluminescent (PL). A strong red emission centered at 645 nm corresponding to the 3P₀→3F₂ transition of Pr³⁺ is observed under 430–500 nm excitated. In addition, it has been found that M⁺ (M⁺ = Li⁺, Na⁺ or K⁺) codoped SrMoO₄: Pr³⁺ phosphors could lead to a remarkable increase of photoluminescence. Luminous intensity was the highest when doping Na⁺ ions. The influence of the sintering temperature on the luminescence properties of the phosphors is also discussed. The optimum sintering temperature was 900°C. The average particle size was about 2~4 μm. Thus, it is a promising material for solid-state lighting based on GaN light-emitting diode (LED).

• Periodical: Key Engineering Materials (Volume 633)
• Pages: 253-256
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.633.253
• Online since: November 2014
• Authors: Cui Lan Gan, Xiao Li Xu, Ji Hui Yang, Zi Fei Peng*
• Keywords: Photoluminescence (PL), Red-Emitting Phosphors, Solid State Reactions, SrMoO₄:Pr³⁺

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