کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1530566 | 1512003 | 2008 | 6 صفحه PDF | دانلود رایگان |
The thermal degradation mechanism of the BaMgAl10O17:Eu2+ (BAM) phosphor used in plasma display panel (PDP) is not yet fully clarified. We studied the dependency of the luminance and chromaticity y-value of BAM phosphor on baking temperature, handling time, atmosphere and thermal treating process. The luminance and chromaticity y-value increased after baking at around 400 °C but decreased at 600 °C or higher temperatures. The thermal degradation was obviously aggravated in oxidative atmosphere. The shift of y-value was reversed when thermal treated in non-oxidative atmosphere. We considered that the mechanism of thermal degradation of BAM phosphor was firstly due to the migration of Eu2+ ions and then due to the effect of oxygen. We also proposed a post-treatment for BAM phosphor to reduce the thermal degradation during panels’ fabrication.
Journal: Materials Science and Engineering: B - Volume 150, Issue 3, 25 May 2008, Pages 151–156