Low-temperature Synthesis of Pure and Mn-doped Willemite Phosphor (Zn2SiO4:Mn) in Aqueous Medium.

Mn-doped willemite (Zn2SiO4:Mn), which is a zinc silicate green phosphor, is synthesized in an aqueous medium at as low temperature as 250°C. Zn2SiO4:Mn samples showed acicular and spherical shaped particles ranging in size from not, vert, similar50 to 2400 nm. The microstructures of the nanocrystalline products were characterized by XRD, TEM, SEM, and light scattering. The results indicated the formation of solid crystalline structures. The optical emission of 1% and 3% Mn-doped Zn2SiO4 was measured by fluorescence spectroscopy, which give further evidence for the incorporation of Mn within the lattice. This procedure provides an easy and contamination-free method for synthesis of willemite, which commonly is prepared at very high temperatures.

Main Author: Ahmadi, Temer S.
Other Authors: Haase, Markus., Weller, Horst.
Language: English
Published: 2000
Online Access: http://ezproxy.villanova.edu/login?url=http://digital.library.villanova.edu/Item/vudl:173005
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