Preparation and thermoluminescence properties of aluminum oxide doped with europium

J. Azorín, A. Esparza, C. Falcony, T. Rivera, M. García, E. Martínez

Resultado de la investigación: Contribución a una revistaArtículo

17 Citas (Scopus)

Resumen

There is little information concerning the use of rare earths as dopants of Al2O3. This paper presents the preparation method and the results of studying the thermoluminescence characteristics of Al2O3:Eu exposed to ultraviolet light. Phosphor powder was obtained by the evaporation method. Optimum dopant concentration was 10% at an evaporation temperature of 700°C. The powder obtained was submitted to thermal treatments at high temperatures in order to stabilise the traps. Diffraction patterns showed amorphous powder up to 500°C; as the temperature was raised crystalline phases of Al2O3 appeared. The photoluminescence spectrum induced by 250 nm UV light exhibited four well defined peaks characteristic of the Eu3+: ion. The glow curve exhibited two peaks at 180 and 350°C. The sensitivity of Al2O3:Eu was 10 times lower than Al2O3:C. The thermoluminescence response was linear from 2.4 to 3000 μJ.cm-2 of spectral irradiance, and the fading 2% in a month. From these results it can be concluded that Al2O3:Eu has potential as an UV dosemeter.

Idioma originalInglés
Páginas (desde-hasta)277-279
Número de páginas3
PublicaciónRadiation Protection Dosimetry
Volumen100
N.º1-4
EstadoPublicada - 1 ene 2002

Huella dactilar

Europium
Aluminum Oxide
europium
thermoluminescence
Powders
aluminum oxides
Ultraviolet Rays
preparation
Temperature
evaporation
fading
irradiance
ultraviolet radiation
phosphors
diffraction patterns
rare earth elements
Hot Temperature
traps
Ions
luminescence

Citar esto

Azorín, J., Esparza, A., Falcony, C., Rivera, T., García, M., & Martínez, E. (2002). Preparation and thermoluminescence properties of aluminum oxide doped with europium. Radiation Protection Dosimetry, 100(1-4), 277-279.
Azorín, J. ; Esparza, A. ; Falcony, C. ; Rivera, T. ; García, M. ; Martínez, E. / Preparation and thermoluminescence properties of aluminum oxide doped with europium. En: Radiation Protection Dosimetry. 2002 ; Vol. 100, N.º 1-4. pp. 277-279.
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abstract = "There is little information concerning the use of rare earths as dopants of Al2O3. This paper presents the preparation method and the results of studying the thermoluminescence characteristics of Al2O3:Eu exposed to ultraviolet light. Phosphor powder was obtained by the evaporation method. Optimum dopant concentration was 10{\%} at an evaporation temperature of 700°C. The powder obtained was submitted to thermal treatments at high temperatures in order to stabilise the traps. Diffraction patterns showed amorphous powder up to 500°C; as the temperature was raised crystalline phases of Al2O3 appeared. The photoluminescence spectrum induced by 250 nm UV light exhibited four well defined peaks characteristic of the Eu3+: ion. The glow curve exhibited two peaks at 180 and 350°C. The sensitivity of Al2O3:Eu was 10 times lower than Al2O3:C. The thermoluminescence response was linear from 2.4 to 3000 μJ.cm-2 of spectral irradiance, and the fading 2{\%} in a month. From these results it can be concluded that Al2O3:Eu has potential as an UV dosemeter.",
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Azorín, J, Esparza, A, Falcony, C, Rivera, T, García, M & Martínez, E 2002, 'Preparation and thermoluminescence properties of aluminum oxide doped with europium', Radiation Protection Dosimetry, vol. 100, n.º 1-4, pp. 277-279.

Preparation and thermoluminescence properties of aluminum oxide doped with europium. / Azorín, J.; Esparza, A.; Falcony, C.; Rivera, T.; García, M.; Martínez, E.

En: Radiation Protection Dosimetry, Vol. 100, N.º 1-4, 01.01.2002, p. 277-279.

Resultado de la investigación: Contribución a una revistaArtículo

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N2 - There is little information concerning the use of rare earths as dopants of Al2O3. This paper presents the preparation method and the results of studying the thermoluminescence characteristics of Al2O3:Eu exposed to ultraviolet light. Phosphor powder was obtained by the evaporation method. Optimum dopant concentration was 10% at an evaporation temperature of 700°C. The powder obtained was submitted to thermal treatments at high temperatures in order to stabilise the traps. Diffraction patterns showed amorphous powder up to 500°C; as the temperature was raised crystalline phases of Al2O3 appeared. The photoluminescence spectrum induced by 250 nm UV light exhibited four well defined peaks characteristic of the Eu3+: ion. The glow curve exhibited two peaks at 180 and 350°C. The sensitivity of Al2O3:Eu was 10 times lower than Al2O3:C. The thermoluminescence response was linear from 2.4 to 3000 μJ.cm-2 of spectral irradiance, and the fading 2% in a month. From these results it can be concluded that Al2O3:Eu has potential as an UV dosemeter.

AB - There is little information concerning the use of rare earths as dopants of Al2O3. This paper presents the preparation method and the results of studying the thermoluminescence characteristics of Al2O3:Eu exposed to ultraviolet light. Phosphor powder was obtained by the evaporation method. Optimum dopant concentration was 10% at an evaporation temperature of 700°C. The powder obtained was submitted to thermal treatments at high temperatures in order to stabilise the traps. Diffraction patterns showed amorphous powder up to 500°C; as the temperature was raised crystalline phases of Al2O3 appeared. The photoluminescence spectrum induced by 250 nm UV light exhibited four well defined peaks characteristic of the Eu3+: ion. The glow curve exhibited two peaks at 180 and 350°C. The sensitivity of Al2O3:Eu was 10 times lower than Al2O3:C. The thermoluminescence response was linear from 2.4 to 3000 μJ.cm-2 of spectral irradiance, and the fading 2% in a month. From these results it can be concluded that Al2O3:Eu has potential as an UV dosemeter.

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Azorín J, Esparza A, Falcony C, Rivera T, García M, Martínez E. Preparation and thermoluminescence properties of aluminum oxide doped with europium. Radiation Protection Dosimetry. 2002 ene 1;100(1-4):277-279.