Fabrication and characterization of YVO_4:Eu^(3+) nanomaterials by the microwave technique  

作　　者：Tran Thu Huong Vu Duc Tu Tran Kim Anh Le Thi Vinh Le Quoc Minh 

机构地区：[1]Institute of Materials Science,Vietnamese Academy of Science and Technology [2]University of Engineering and Technology,National University Hanoi [3]Departments of Chemistry,Hanoi University of Mining and Geology

出　　处：《Journal of Rare Earths》2011年第12期1137-1141,共5页稀土学报（英文版）

基　　金：Project supported by Vietnam's National Foundation for Science and Technology Development (NAFOSTED) (103.06.46.09);part of Vietnam Basic Research Programming for Application (2/2/742/2009/ HD-DTDL)

摘　　要：Fabrication and characterization of YVO4：Eu^3＋ nanophosphors prepared by microwave （MW） irradiation assisted soft template synthesis were reported. The effects of synthesis conditions such as different powers of MW irradiation, pH values and concentration of reac- tion materials on properties of nanophosphor were also investigated to obtain the controllable size, morphology and high luminescence efficiency. Morphology, crystalline structure, and optical properties were characterized by field emission scanning electron microscopy （FE-SEM）, X-ray diffraction （XRD） and fluorescence spectroscopy, respectively. The results showed that YVOa：Eu^3＋ nanophosphors were obtained by using diethyleneglycol （DEG） as soft template, with pH values in the range of 4 to 12, upon microwave irradiation from 300 to 900 W, at temperature of 80 ℃. The high fluorescent YVOa：Eu^3＋ nanocrystals obtained with size from 15 nm down to 8 nm are more effective to develop an ultrahigh sensitive fluorescent label for biomolecule, cell and tissue.Fabrication and characterization of YVO4：Eu^3＋ nanophosphors prepared by microwave （MW） irradiation assisted soft template synthesis were reported. The effects of synthesis conditions such as different powers of MW irradiation, pH values and concentration of reac- tion materials on properties of nanophosphor were also investigated to obtain the controllable size, morphology and high luminescence efficiency. Morphology, crystalline structure, and optical properties were characterized by field emission scanning electron microscopy （FE-SEM）, X-ray diffraction （XRD） and fluorescence spectroscopy, respectively. The results showed that YVOa：Eu^3＋ nanophosphors were obtained by using diethyleneglycol （DEG） as soft template, with pH values in the range of 4 to 12, upon microwave irradiation from 300 to 900 W, at temperature of 80 ℃. The high fluorescent YVOa：Eu^3＋ nanocrystals obtained with size from 15 nm down to 8 nm are more effective to develop an ultrahigh sensitive fluorescent label for biomolecule, cell and tissue.

关 键 词：microwave synthesis method DEG soft template YVO4：Eu^3＋ nanophosphor LUMINESCENCE rare earths 

分 类 号：TB383.1[一般工业技术—材料科学与工程]