Title :
Phase Composition and Luminescent Characteristics of Y2O3: Eu and Y2O2S: Eu Crystals Obtained using Borate Flux
Author :
Strel´tsov, A.V. ; Torgashov, G.V. ; Sinitsyn, N.I. ; Torgashov, I.G. ; Gulyaev, Yu.V. ; Dmitrienko, V.P. ; Dmitrienko, A.O.
Author_Institution :
Inst. of Radio Eng. & Electron., Russian Acad. of Sci.
Abstract :
The crystalline phosphors Y2O3:Eu and Y2O2S:Eu are widely used as the red component of color cathodoluminescent displays of different purpose. Nevertheless, their chromaticity coordinates does not completely meet the requirements which are set for color displays. Along with pigmentation, the method of enhancing of Y2O3:Eu radiation band intensity in deep red range is known (Morozova, 2002). It lies in borate acid adding to the flux composition during synthesis and enhances the red band intensity in the light emission spectrum. However, the nature of the influence of that modification on the photo- and cathodoluminescence of crystals is not still studied well. The study of influence of treatment by H3BO3 under different conditions during Y2 O3:Eu crystals synthesis on their crystalline structure, spectral characteristics and their photo- and cathodoluminescence intensity is carried out. Changes in luminescent properties of Y2O2S:Eu polycrystals in case of their synthesis from initial oxides which were obtained using borate flux is examined as well
Keywords :
boron compounds; cathodoluminescence; colour displays; crystal structure; europium; hydrogen compounds; phosphors; photoluminescence; yttrium compounds; H3BO3; Y2O2S:Eu; Y2O3:Eu; borate acid; borate flux; cathodoluminescence intensity; color cathodoluminescent displays; crystalline phosphors; crystalline structure; flux composition; light emission spectrum; luminescent characteristics; luminescent properties; phase composition; photoluminescence intensity; radiation band intensity; Atomic measurements; Charge transfer; Crystallization; Crystals; Displays; Lattices; Phosphors; Photoluminescence; Pigmentation; Testing;
Conference_Titel :
Vacuum Electronics Conference, 2006 held Jointly with 2006 IEEE International Vacuum Electron Sources., IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
1-4244-0108-9
DOI :
10.1109/IVELEC.2006.1666350
