Liminescence Properties of Zine Gallate Affected by Mg and Rare-earth Elements

Hojin Ryu; Hee Dong Park

Journal of Industrial and Engineering Chemistry, Vol.3, No.3, 247-249, September, 1997

Advanced Materials Division, Korea Research Institue of Chemical Technology, P.O.BOX 107, Yusung, Taejon 305-600, Korea

Zinc gallate (ZnGa₂O₄,) phosphor shows promising low voltage properties. Phosphor powders of zinc gallate added with Mg and rare-earth elements were prepared with solid state-reaction method to improve blue luminescent properties. Tm (or Dy), Mg-added zinc gallate phosphor exhibited a strong blue band emission, peaking at about 420 nm, the maximum intensity at the concentration of 0.005 mol% Tm and 0.2 mol% Mg. It was possible to control luminescent characteristics of zinc gallate by adding various elements.

[References]

Tanaka M, Takayama K, Azeta A, Yano K, Kishino T, SID 28th Intern. Symp., Society for Information Display (ed.), p. 47-51, Boston, U.S.A. (1997)
Hsieh IJ, Chu KT, Yu CF, Feng MS, J. Appl. Phys., 76, 3735 (1994)
Itoh S, Toki H, Sato Y, Morimoto K, Kishino T, J. Electrochem. Soc., 138, 1509 (1991)
Shea LE, Datta RK, Brown JJ, J. Electrochem. Soc., 141(7), 1950 (1994)
Ryu HJ, Park HD, J. Ind. Eng. Chem., in press

[Related Articles]

[1] Tanaka M, Takayama K, Azeta A, Yano K, Kishino T, SID 28th Intern. Symp., Society for Information Display (ed.), p. 47-51, Boston, U.S.A. (1997)

[2] Hsieh IJ, Chu KT, Yu CF, Feng MS, J. Appl. Phys., 76, 3735 (1994)

[3] Itoh S, Toki H, Sato Y, Morimoto K, Kishino T, J. Electrochem. Soc., 138, 1509 (1991)

[4] Shea LE, Datta RK, Brown JJ, J. Electrochem. Soc., 141(7), 1950 (1994)

[5] Ryu HJ, Park HD, J. Ind. Eng. Chem., in press