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Formation Process of a Red Phosphor, $Y_2O_2S:Eu^{3+}$

  • Published : 1990.10.20

Abstract

Yttrium oxysulfide incoporated with europium has been prepared by direct heating the mixture of $Y_2O_3,\;Eu_2O_3,\;NaOH(or\;Na_2CO_3)$, and S. The reaction of the mixture at low temperatures and treatment at higher temperatures are studied. The formation of $Y_2O_2S$ is completed at lower temperature (ca. 500$^{\circ}C$) and incorporation of $Eu^{3+}$ into $Y_2O_2S$ lattice proceeds at higher temperature (above 1000$^{\circ}C$) along with crystal growth. Small amount of the unknown phase considered to be $Y_2O_2S_2$ is formed along with $Y_2O_2S$ in the temperature range from 400$^{\circ}C$ to 460$^{\circ}C$.

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Cited by

  1. ChemInform Abstract: Formation Process of a Red Phosphor, Y2O2S:Eu3+. vol.22, pp.12, 1990, https://doi.org/10.1002/chin.199112004
  2. 42.4: Enhanced Photoluminescence of (Y,A)V(O,S)[sub 4]:Eu[sup 3+] (A = Sr, Ba) Compared with YVO[sub 4]:Eu[sup 3+] vol.36, pp.1, 1990, https://doi.org/10.1889/1.2036274
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