Spectral and kinetic parameters of thermoluminescence in cation-deficient AlN crystals

Spectral and kinetic parameters of thermoluminescence in cation-deficient AlN crystals

Spectrally resolved thermally stimulated luminescence (SR-TSL) was studied. SR-TSL excitation and emission processes in UV irradiated submicron AlN crystals were analyzed. It was found that the most effective SR-TSL excitation is in 4.68 eV band. Bands of 3.07 and 2.54 eV attributed to electron tran...

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Hauptverfasser: Chaikin, D. V., Spiridonov, D. M., Vokhmintsev, A. S., Martemyanov, N. A., Weinstein, I. A.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Crystals
Electron transitions
Emission analysis
Emission spectra
Excitation
Thermoluminescence
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Zusammenfassung:Spectrally resolved thermally stimulated luminescence (SR-TSL) was studied. SR-TSL excitation and emission processes in UV irradiated submicron AlN crystals were analyzed. It was found that the most effective SR-TSL excitation is in 4.68 eV band. Bands of 3.07 and 2.54 eV attributed to electron transitions involving ON impurities and oxygen vacancies centers (VAl-ON) were observed in emission spectra. It was shown within the framework of formal description of general order kinetics that VN-centers had 0.52 ± 0.06 eV activation energy and were responsible for SR-TSL peak at 345 ± 5 К.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5134242