Feasibility Study of Silicate Phosphor CaMgSi2O6:Eu2+ as Blue PDP Phosphors

Takashi KUNIMOTO  Ryo YOSHIMATSU  Koutoku OHMI  Shosaku TANAKA  Hiroshi KOBAYASHI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E85-C   No.11   pp.1888-1894
Publication Date: 2002/11/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Electronic Displays)
Category: Plasma Displays
Keyword: 
VUV,  PDP,  CaMgSi2O6:Eu2+,  luminance degradation,  long lifetime,  

Full Text: PDF>>
Buy this Article




Summary: 
A blue-light-emitting Eu2+ doped CaMgSi2O6 phosphor with a long lifetime for a plasma display panel (PDP) was developed. The CaMgSi2O6:Eu2+(CMS:Eu2+) phosphors synthesized using SiO2-rich source materials show no luminance degradation during the baking process for binder burn-off, and the photoluminescence peak intensity of the Eu2+ emission band is higher than that of conventional blue phosphor BaMgAl10O17:Eu2+ (BAM) after the baking process. The test PDP using synthesized CMS:Eu2+ phosphor shows a comparable emission peak intensity to that of BAM, while the luminance of the CMS:Eu2+ panel is approximately 55% that of the BAM panel due to the narrower spectral bandwidth and shorter peak wavelength. The CMS:Eu2+ panel shows less luminance degradation than BAM under the aging test, and the CMS:Eu2+ panel retains 85% of its luminance after 300 hours driving. It is found that CMS:Eu2+ appears to be a promising blue phosphor material for PDP.