Al[sub 2]O[sub 3] Nanoencasulation of BaMgAl[sub 10]O[sub 17]:Eu[sup 2+] Phosphors for Improved Aging Properties in Plasma Display Panels
- 1 January 2004
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 151 (10), H210-H212
- https://doi.org/10.1149/1.1787632
Abstract
We studied the aging characteristics of the plasma display panel (PDP) containing Al2O3Al2O3 -coated BaMgAl10O17:Eu2+BaMgAl10O17:Eu2+ blue phosphors and the thermal characteristics of coated phosphors. The nanoscale Al2O3Al2O3 coatings on BaMgAl10O17:Eu2+BaMgAl10O17:Eu2+ phosphors were obtained by the sol-gel method for an Al2O3Al2O3 concentration of 2.0 wt %, pH values from 2 to 4, and a solution temperature of 50°C. Transmission electron microscopy measurements confirmed the formation of nano and uniform coatings on BaMgAl10O17:Eu2+BaMgAl10O17:Eu2+ powders with the thickness of ∼8 nm. An optical enhancement (∼15%) was reported in the PDP containing Al2O3Al2O3 -coated BaMgAl10O17:Eu2+BaMgAl10O17:Eu2+ phosphors after a 3000 h longevity test of PDP (a discharge voltage of 170 V and an average current of 2.06 A). We proposed that this improvement originated from both the enhanced thermal stability of coated phosphors and the enhanced operating stability of PDP containing coated phosphors. © 2004 The Electrochemical Society. All rights reserved.Keywords
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