On the Nature of Eu-Related Emissions in ZnS and CaS |
| K. Świątek, M. Godlewski Institute of Physics, Polish Academy of Sciences Al. Lotników 32/46, 02-668 Warszawa, Poland L. Niinistö and M. Leskelä Department of Chemistry, Helsinki University of Technology, SF-02150 Espoo, Finland |
| Received: August 8, 1990 |
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| The Eu-connected recombination processes in ZnS and CaS are analyzed on the basis of optical studies. A new Eu-related emission in ZnS is attributed to the recombination of an exciton bound at the Eu2+ center, while in CaS the emission is dominated by the direct Eu2+ intra-ion transition. |
| DOI: 10.12693/APhysPolA.79.255 PACS numbers: 71.55.Gs, 71.35.+z, 78.55.Et |