Photoluminescence properties of Cu+ centers in MgS, CaS, SrS and BrS

The detailed emission and excitation spectra and the temperature dependence of the excitation efficiency are obtained for MgS:Cu + , CaS:Cu + , SrS:Cu + and BaS:Cu + at various temperatures between 16 and 293 K. In the excitation spectra of all the powder phosphors, two bands assigned to the intraio...

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Veröffentlicht in:Japanese Journal of Applied Physics 1991-12, Vol.30 (12A), p.3335-3340
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description The detailed emission and excitation spectra and the temperature dependence of the excitation efficiency are obtained for MgS:Cu + , CaS:Cu + , SrS:Cu + and BaS:Cu + at various temperatures between 16 and 293 K. In the excitation spectra of all the powder phosphors, two bands assigned to the intraionic transitions in the Cu + ion are observed. The luminescence mechanism is explained by the isolated Cu + ion model. The temperature dependence of the excitation efficiency suggests that the Cu + ion in CaS, SrS and BaS occupies an off-center position of the sulfur octahedron.
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source IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link
subjects Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Photoluminescence
Physics
title Photoluminescence properties of Cu+ centers in MgS, CaS, SrS and BrS
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