Luminescence of Alkaline Earth Zirconium Silicates
- 1 January 1972
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 119 (9) , 1237-1240
- https://doi.org/10.1149/1.2404449
Abstract
The luminescence of alkaline earth zirconium silicates has been investigated. The unactivated compounds show an ultraviolet emission band, which can be excited by cathode rays or by short‐wavelength (190–210 nm) ultraviolet radiation. The excitation and emission can be ascribed to charge‐transfer transitions between the oxygen and the zirconium ions. Activation of the alkaline earth zirconium silicates with various activators has been tried, lead giving the most efficient luminescence, e.g., in (λmax of the emission at 355 nm) a quantum efficiency (with 254 nm excitation) of 52% was observed. Excitation and emission spectra, efficiencies, and temperature dependence of the lead‐activated phosphors are presented.Keywords
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