We studied the aging characteristics of the plasma display panel (PDP) containing -coated blue phosphors and the thermal characteristics of coated phosphors. The nanoscale coatings on phosphors were obtained by the sol-gel method for an 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 powders with the thickness of ∼8 nm. An optical enhancement (∼15%) was reported in the PDP containing -coated 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.
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Rag et al. (2004) studied this question.
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