The Origin of the Fluorescence in Self-Activated ZnS, CdS, and ZnO
- 1 February 1954
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 22 (2), 250-252
- https://doi.org/10.1063/1.1740044
Abstract
It is proposed that the luminescent center in ``self‐activated'' ZnS consists of a cation vacancy whose nearest surroundings have lost one electron. Such a center is consistent with the fact that at low firing temperatures, the appearance of the blue fluorescence of self‐activated ZnS depends upon the presence of ``promoter ions'' (monovalent anions or trivalent cations) whereas, if the firing temperature be sufficiently high, some blue fluorescence is obtained without the presence of such promoter ions. The luminescence of reduced ZnS, CdS, and ZnO is also discussed, and is attributed to anion vacancies that have trapped one electron.Keywords
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