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Optical Properties of LAO:Eu3+ Thin films

Published online by Cambridge University Press:  01 February 2011

D. Y. Medina ,
S. Orozco ,
R. T. Hernandez ,
I. Hernandez  and
C. Falcony
D. Y. Medina
Affiliation:
CBI-UAM-Azcapotzalco, Av. San Pablo No 180 Col. Reynosa-Tamaulipas, C. P. 02200 México, D. F, México
S. Orozco
Affiliation:
Depto. de Física, Fac. de Ciencias UNAM Av. Universidad 3000, Col. Copilco, D.F. México
R. T. Hernandez
Affiliation:
CBI-UAM-Azcapotzalco, Av. San Pablo No 180 Col. Reynosa-Tamaulipas, C. P. 02200 México, D. F, México
I. Hernandez
Affiliation:
CBI-UAM-Azcapotzalco, Av. San Pablo No 180 Col. Reynosa-Tamaulipas, C. P. 02200 México, D. F, México
C. Falcony
Affiliation:
Depto. de Física, Fac. de Ciencias UNAM Av. Universidad 3000, Col. Copilco, D.F. México
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Abstract

Lanthanum aluminate (LaxAl1−xOy; LAO) films doped with europium were deposited on a glass substrate by Ultrasonic Spray Pyrolysis technique. Like precursor solution was used 0.04M lanthanum nitrate and 0.04M aluminum nitrate in de-ionized water, and from europium nitrate was aggregated europium to 6%mol respect to LaO. The aluminum incorporated to rare earth oxides shows a high hydration resistance, therefore the films show stability in their luminescent properties. In this work the optical and morphological properties of the films are reported in the 350–600°C deposition range. The photoluminescent emission spectra show the characteristic peaks of the Eu3+ ion transitions: 5D0 → 7F0 (565 nm), 5D0→7F1 (596 nm), 5D0–7F2 at 615 nm and 623 nm, 5D0→7F3 (660 nm) and 5D0→7F4 (715 nm) for an excitation wavelength of 270 nm.

Keywords

spray pyrolysisfilmEuluminescencelanthanide
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1275: Structural and Chemical Characterization of Metals, Alloys and Compounds , 2010 , 20
Copyright
Copyright © Materials Research Society 2010

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