Cathodoluminescent properties of Tb3+-doped yttria nanocrystallites
来源期刊：JOURNAL OF RARE EARTHS2009年第4期
论文作者：W.Str D.Hreniak P.Psuja
Key words：cathodoluminescence; yttria; phosphors; nanocrystallites; Tb3+; rare earths;
Abstract: The Tb3+-doped Y2O3 nanopowders were synthesized using the modified Pechini method.The average size of nanocrystallites was controlled by different sintering temperatures.The structure and morphology of obtained nanopowders were examined using the XRD and SEM analyses.The Cr:Al2O3 was mixed with Tb3+:Y2O3 powders and its normalized emission was used.to measure a relative intensity of Tb3+:Y2O3.The mixtures were electrophorefically deposited on ITO-glass slides.The cathodoluminescence spectra of obtained layers were recorded and analysed.The discussion over an influence of average grains size on phosphor efficiency was presented.
W.Str1，D.Hreniak2，P.Psuja2
(1.e)k(Institute of Low Temperature and Structure Research,Polish Academy of Sciences,ul.Okolna 2,50-422 Wroclaw,Poland;
2.Institute of Low Temperature and Structure Research,Polish Academy of Sciences,ul.Okolna 2,50-422 Wroclaw,Poland)
Abstract:The Tb3+-doped Y2O3 nanopowders were synthesized using the modified Pechini method.The average size of nanocrystallites was controlled by different sintering temperatures.The structure and morphology of obtained nanopowders were examined using the XRD and SEM analyses.The Cr:Al2O3 was mixed with Tb3+:Y2O3 powders and its normalized emission was used.to measure a relative intensity of Tb3+:Y2O3.The mixtures were electrophorefically deposited on ITO-glass slides.The cathodoluminescence spectra of obtained layers were recorded and analysed.The discussion over an influence of average grains size on phosphor efficiency was presented.
Key words:cathodoluminescence; yttria; phosphors; nanocrystallites; Tb3+; rare earths;
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