Microwave-Assisted Metathetic Synthesis of Er~(2+)/Yb~(3+) Co-Doped BaMoO4 Particles and Their Upconversion Photoluminescence Properties

摘要

Er~(3+) doped BaMoO4 (BaMoO4:Er~(3+)) and Er~(3+)Yb~(3+) co-doped BaMoO4 (BaMoO4:Er~(3+)/Yb~(3+)) particles were successfully synthesized by a cyclic microwave-assisted metathetic method showing a fine and homogeneous morphology with partcle sizes of 0.5-1 μm. At excitation at 980 nm, BaMoO4:Er~(3+) and BaMoO4:Er~(3+)/Yb~(3+) particles exhibited a strong 525-nm emission band and a weak 550-nm emission band in the green region. The UC intensity of BaMoO4:Er~(3+)/Yb~(3+) particles was higher than that of the BaMoO4:Er~(3+) particles. The Raman spectrum of BaMoO4:Er~(3+)/Yb~(3+) particles indicated the detection of additional peaks at higher frequencies (390 and 505 cm~(-1)) and at lower frequencies (218 and 255 cm~(-1)).