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Synthesis of Zn2−xMnxSiO4 phosphors using a hydrothermal technique

Published online by Cambridge University Press:  31 January 2011

Chulsoo Yoon  and
Shinhoo Kang
Chulsoo Yoon
Affiliation:
School of Materials Science and Engineering, Seoul National University, Seoul 151–742, Korea
Shinhoo Kang
Affiliation:
School of Materials Science and Engineering, Seoul National University, Seoul 151–742, Korea
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Abstract

Zn2−xMnxSiO4 phosphors were synthesized by a hydrothermal process using ZnO and SiO2. Prismatic Zn4Si2O7(OH)2 · H2O particles were formed through heterogeneous nucleation on the surface of the ZnO particles. The Zn2SiO4 phase was formed through an isometric phase transition of Zn4Si2O7(OH)2 · H2O. Water pressure, as well as the particle size of the raw materials, had a profound effect on the temperature of phase formation. The effect of solution pH on the morphology and growth of the particles was investigated. The photoluminescence of the synthesized Zn2−xMnxSiO4 phosphor was also examined. The color coordinate of the Zn2−xMnxSiO4 phosphor obtained in this study showed a green color, which was shifted toward short wavelength.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 4 , April 2001 , pp. 1210 - 1216
Copyright
Copyright © Materials Research Society 2001

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