Luminescent Phases in Willemite Films
- 1 November 1958
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America
- Vol. 48 (11) , 816-820
- https://doi.org/10.1364/josa.48.000816
Abstract
Red-, yellow-, and green-luminescent films have been formed by evaporation of powdered Zn2SiO4[Mn]. The yellow-emitting form was formed by firing the evaporated film plus additive in air at relatively low temperatures (750°C). The red form was produced on Vycor substrates at higher temperatures (1100°C). Infrared reflection studies and x-ray diffraction analyses of these films indicate that the red-emitting form is SiO2[Mn] and that the yellow form is amorphous Zn2SiO4[Mn]. The luminescence of both of these phosphors is probably due to interstitial manganese ions. The strong chemical reaction between the luminescent film and the glass substrate is brought out.Keywords
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