Title :
Characterization of nano-size YVO4:Eu and (Y,Gd)VO4:Eu phosphor via low voltage cathodoluminescence
Author :
Kang, Jong Hyuk ; Nazarov, Michael ; Kim, Jin Young ; Duk Young Jeon
Author_Institution :
Dept. of Mater. Sci. & Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
Abstract :
Low voltage cathodoluminescence (LVCL) measurements were carried out to better understand the role of Gd in (Y,Gd)VO4:Eu phosphor and to compare solid-state reaction (SSR) with coprecipitation method (PM) to synthesize those phosphors. From the analysis of LVCL measurement, it is believed that there is no interaction between Gd and Eu, and Gd affects only the symmetry of Eu site. It is also found that nano-size YVO4:Eu phosphor synthesized by PM shows low quantum yield in comparison with that synthesized by SSR.
Keywords :
cathodoluminescence; crystal symmetry; europium; gadolinium compounds; nanostructured materials; phosphors; precipitation; vacancies (crystal); yttrium compounds; (Y,Gd)VO4:Eu phosphor; GdVO4:Eu; YVO4:Eu; coprecipitation method; low voltage cathodoluminescence; phosphor synthesis; quantum yield; solid-state reaction; Cathode ray tubes; Electron beams; Flat panel displays; Low voltage; Luminescence; Materials science and technology; Phosphors; Powders; Spontaneous emission; X-ray scattering;
Conference_Titel :
Vacuum Nanoelectronics Conference, 2004. IVNC 2004. Technical Digest of the 17th International
Print_ISBN :
0-7803-8397-4
DOI :
10.1109/IVNC.2004.1354930
