On luminescence stimulated from deep traps using thermally-assisted time-resolved optical stimulation in α-Al2O3: C

Nyirenda, Angel N; Chithambo, Makaiko L; Polymeris, G S

Title: On luminescence stimulated from deep traps using thermally-assisted time-resolved optical stimulation in α-Al2O3: C
Creator: Nyirenda, Angel N
Creator: Chithambo, Makaiko L
Creator: Polymeris, G S
Date Issued: 2016
Date: 2016
Type: text
Type: article
Identifier: http://hdl.handle.net/10962/124627
Identifier: vital:35639
Identifier: https://doi.org/10.1016/j.radmeas.2016.01.016
Description: We report a study of charge transfer mechanisms of electrons stimulated optically from very deep traps, also known as donor traps, in α-Al2O3:C. The investigations were carried out using thermally-assisted time-resolved optical stimulation, thermoluminescence and by way of residual thermoluminescence from the main electron trap. When the charges are optically stimulated from the deep traps, they are redistributed via the conduction band to the main electron trap and the shallow trap from where they are optically or thermally released for recombination at luminescence centres. The luminescence is strongly quenched at high measurement temperature as evident by very short luminescence lifetimes at these temperatures. The main peak due to residual thermoluminescence is located at a higher temperature than the conventional main peak.
Format: 4 pages
Format: pdf
Language: English
Relation: Radiation Measurements
Relation: Nyirenda, A.N., Chithambo, M.L. and Polymeris, G.S., 2016. On luminescence stimulated from deep traps using thermally-assisted time-resolved optical stimulation in α-Al2O3: C. Radiation Measurements, 90, pp.109-112.
Relation: Radiation Measurements volume 90 109 112 July 2016 1350-4487
Rights: Elsevier
Rights: Use of this resource is governed by the terms and conditions of the Science Direct Terms and Conditions Statement (https://www.elsevier.com/legal/elsevier-website-terms-and-conditions)

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