Phosphorescence and thermoluminescence of uv-irradiated CaO powders at temperatures from 120 to 350 K
- 1 November 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 46 (17) , 11121-11124
- https://doi.org/10.1103/physrevb.46.11121
Abstract
Long-lived phosphorescence and thermoluminescence (TL) from uv-irradiated CaO powders under high vacuum are observed at low temperatures. The emission spectra of phosphorescence and TL have a peak at about 3.0 eV. On the basis of the phosphorescence decay curves, TL glow curves, and ESR data, a plausible emission mechanism is discussed in terms of thermally assisted tunneling recombination between electron traps near the surfaces and hole traps.Keywords
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