Cathodoluminescence of Ca1 − x Mg x S : A ( A = Eu or Ce )

1 August 1984

journal article
Published by The Electrochemical Society in Journal of the Electrochemical Society

Vol. 131 (8) , 1953-1960
https://doi.org/10.1149/1.2115999

Abstract

Cathodoluminescent properties of Eu²⁺‐ or Ce³⁺‐activated and phosphors are investigated at 300 K. It is found that exhibits a high energy efficiency (∼16 %) and an improved water‐resistance if residual oxide content is less than 1 m/o. Under these highly sulfurizing conditions, is confirmed to be completely miscible with in any compositional ratio. The composition , Ba(0.1 m/o), whose color coordinates are comparable to the red phosphor , exceeds the latter in brightness by 15% at 18 kV excitation. Additionally, Eu²⁺‐activated alkaline‐earth binary sulfides are examined. A complete miscibility is ascertained in the pseudobinary system where the difference in cation radius is less than 0.035 nm. Stress‐induced peak shifts are observed in and . Some mechanisms for these shifts are proposed.

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