稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
JOURNAL OF RARE EARTHS
2015年
7期
706-711
,共6页
王晓旭%胡业旻%孟详海%李瑛%朱明原%金红明
王曉旭%鬍業旻%孟詳海%李瑛%硃明原%金紅明
왕효욱%호업민%맹상해%리영%주명원%금홍명
yttrium oxide%hydrolysis and oxidation method%phosphors%optical properties%rare earths
A novel and convenient hydrolysis and oxidation method was first used in preparation of carbon contained Y2O3 phosphor powders.The alloy was hydrolyzed in deionized water and the obtained Y(OH)3 powders were heat treated in air atmosphere. The fi-nal products - Y2O3 powders were micron clusters which were aggregated by hundreds of nanoparticles with the size of about 5 nm. The chemical composition, structural and morphological features of the samples were characterized by means of X-ray powder dif-fraction (XRD) analysis, transmission electron microscopy (TEM), Fourier-transform infrared (FT-IR) spectra, X-ray photoelectron spectra (XPS) and carbon sulfur analyzer. The obtained powders showed good bluish-white photoluminescence (PL) emissions (rang-ing from 430 to 600 nm, peaking at 468 nm and 578 nm) under the xenon light excitation. The luminescent mechanism was ascribed to the carbon impurities in the Y2O3 host.
