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Author Wachtel, A.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher The Electrochemical Society
Language English
Subject Keyword PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ♦ CALCIUM SULFIDES ♦ CONVERSION ♦ COPPER ♦ COPPER SULFIDES ♦ DENSITY ♦ ELECTRICITY ♦ ELECTROLUMINESCENCE ♦ EMISSION ♦ EUROPIUM ♦ EXCITATION ♦ FREQUENCY ♦ HEAT TREATMENTS ♦ LUMINESCENCE
Abstract Introduction of Cu into CaS: Eu does not interfere with the red Eu <sup>++</sup> emission. Excitation of the blue CaS: Cu emission is more effective by 3650A than by 2537A. Firing with excess Cu gives rise to deposits of free Cu<sub>2</sub>S which may cause an efficient system of contact electroluminescence. The electroluminescent properties depend on the physical characteristics of the phosphors, including its state of agglomeration. At moderate concentrations of Eu, the blue emission of CaS: Cu is entirely suppressed in electroluminescent excitation.
ISSN 00134651
Educational Use Research
Learning Resource Type Article
Publisher Date 1960-01-01
Publisher Department Westinghouse Electric Corp., Bloomfield, N.J.
Journal Journal of the Electrochemical Society
Volume Number 107
Issue Number 3
Organization Westinghouse Electric Corp., Bloomfield, N.J.


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