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The X-ray luminescence (XRL) properties of γ-AlON (γ-Al5O6N), β-SiAlON (Si6-nAlnOnN8-n, where n = 2 and 3) and Ca-α-SiAlON (Cam/2Si12-(m+n)Alm+nOnN16-n) oxynitride samples doped by Eu2+ were investigated. The strong correlation of luminescence spectra parameters of Eu2+ luminescence centers in dependence of oxynitride samples composition is observed. With fitting procedure the composition of XRL spectra with complex profile of investigated oxynitride samples of γ-AlON, β-SiAlON and Ca-α-SiAlON was identified and discussed. [ABSTRACT FROM AUTHOR]

Thermostimulated luminescence (TSL) of Al5O6N:Ce3+ and Al5O6N:Eu2+ with various dopant concentration has been investigated. Low-temperature TSL peaks in the range 300-500 K is observed. TSL curves approximated by sum of calculated curves with general-order kinetics. TSL intensity of samples with optimal dopant concentration (0.1 and 0.4 at. % for Ce3+ and Eu2+ respectively) is comparable with one of anion-defective corundum radiation detectors (TLD-500). [ABSTRACT FROM AUTHOR]

X-ray luminescence (XRL) and pulsed cathodoluminescence (PCL) spectra of Eu2+-doped aluminum oxynitride Al5O6N (prepared using the standard sol-gel technique) have been investigated. The radioluminescence spectra, concentration dependences of light yield and time parameters of luminescence process have been measured and discussed. Some peculiarities of luminescence spectra as well as the possible excitation mechanism of AL5O6N with Eu2+ dopants are discussed too. [ABSTRACT FROM AUTHOR]