Paper Title:
Synthesis of Ultrafine Long Afterglow Phosphor with High Brightness via Al2O3 Coating Route
  Abstract

Long afterglow phosphor is a special energy-saving material, which can store the energy of light irradiation and release light slowly. Ultrafine aluminate long afterglow phosphor is commonly prepared by the jet milling method. This method results in weak brightness, which restricts its application in delicate printing or textiles. In this study, fine particle aluminate phosphor (5μm) was coated by alumina, and then re-reduced under a high temperature. The alumina film works as a barrier layer, which protects the particles from sintering. The re-reduced phosphor had double afterglow brightness, and the size of the particle retained original level. The influences of pH value and KOH adding speed were investigated, the optimized parameters are: pH = 5, KOH adding speed = 2 ml/min.

  Info
Periodical
Chapter
Composite Design and Optimization
Edited by
Aimin Yang, Jingguo Qu and Xilong Qu
Pages
69-73
DOI
10.4028/www.scientific.net/AMM.84-85.69
Citation
Y. Dong, Y. Zhou, W. J. Gu, T. Cao, "Synthesis of Ultrafine Long Afterglow Phosphor with High Brightness via Al2O3 Coating Route", Applied Mechanics and Materials, Vols. 84-85, pp. 69-73, 2011
Online since
August 2011
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$32.00
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