Thermoluminescence of Chromium Doped Cd2Nb2O7 Crystals

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F03%3A04092682" target="_blank" >RIV/68407700:21340/03:04092682 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Thermoluminescence of Chromium Doped Cd2Nb2O7 Crystals
Original language description
The exposure of the Cd2Nb2O7:Cr crystal to monochromatic light with the wavelength shorter than 600 nm at 12 K decreases the Cr3+ photoluminescence emission and allows us to observe thermoluminescence within 60 - 200 K during subsequent heating of the crystal at a rate of 0.077 K/s. The glow curve of thermoluminescence revealed a rather complex structure with two pronounced intensive glow peaks at 91 and 180 K and four rather weak peaks at 99, 117, 132, and 155 K. An analysis of the glow peaks by "an initial rise" gave evidence of many various charge carrier traps with the activation energies from 150 to 470 meV. Since a comparison of the thermoluminescence and photoluminescence emission spectra showed that these spectra are identical, it was concludedthat the thermoluminescence glow peaks are associated with thermal release of charge carriers from shallow traps followed by Cr4+ Ž Cr3+(2E) and/or Cr2+ Ž Cr3+(2E) charge capture and 2E Ž 4A2 radiative decay of Cr3+(2E) ions.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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