An Arsenic-Activated Zinc Sulfide Phosphor
- 1 January 1951
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 98 (10) , 406-408
- https://doi.org/10.1149/1.2778016
Abstract
The addition of small amounts of arsenic to zinc sulfide produces a phosphor which has three emission bands when excited by ultraviolet light or cathode rays. The blue band at 4650 Å is the one that is also present in unactivated zinc sulfide phosphors. The other two bands at 5200 Å and 6200 Å are due to the presence of arsenic. The relative intensity of the various bands depends on the concentration of arsenic, the atmosphere in which the phosphor was fired, the mode of excitation, and the temperature during excitation. By a proper adjustment of the arsenic concentration, phosphors can be prepared, the emitted light of which appears white.Keywords
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