1992•Physical review. B, Condensed matterRequires access

Phosphorescence and thermoluminescence of uv-irradiated CaO powders at temperatures from 120 to 350 K

Yasunori Yanagisawa, N. Inishi, Aki Narumi Aki Narumi

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.

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Key concepts: Phosphorescence, Thermoluminescence, Materials science, Irradiation, Persistent luminescence, Electron, Analytical Chemistry (journal), Quantum tunnelling