Microwave heating synthesis and luminescence property of Eu ³⁺ doped SrMoO ₄ micro-octahedrons

Uniform SrMoO ₄ micro-octahedrons were synthesized by microwave heating method. The as-prepared products were characterized by several techniques. Results showed that the reactant concentration and reaction time had crucial influence on the morphology of the products. The possible growth process of SrMoO ₄ octahedron was proposed based on the time-dependent shape evolution, which followed Ostwald ripening, crystallization/dissolution, and re-crystallization. Eu ³⁺-doped (1-20mol%) SrMoO ₄ with octahedrons-like polyhedron was prepared under the same condition. The excitation spectrum of SrMoO ₄:Eu ³⁺ was mainly composed of three intense peaks of 305, 393 and 463nm. The characteristic red emission peaks at 612/615nm were ascribed to ⁵D ₀→ ⁷F ₂ transition of Eu ³⁺ ions. The quenching concentration was found at ~15mol% doping of Eu ³⁺.