Share This Article:

Luminescence Characteristics of LaAlO3:Eu3+ Obtained by Modified Pechini’s Method

Full-Text HTML XML Download Download as PDF (Size:1039KB) PP. 1-12
DOI: 10.4236/ojsta.2017.61001    507 Downloads   944 Views Citations

ABSTRACT

The aim of the present work was to investigate the luminescent properties of europium-doped lanthanum aluminate (LaAlO3) powder prepared by Modified Pechini (MP) method. Samples were prepared at different Eu3+ concentrations and calcined at 1600°C. Structural and morphology characterizations were obtained by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscope (TEM). Luminescent properties were analyzed by photoluminescence (PL) and thermoluminescent phenomena. The XRD pattern shows pure lanthanum aluminate oxide LaAlO3 with a rhombohedral structure. Photoluminescence studies of the powders was related to 4f → 4f(5D07Fi) (i = 1, 2, 3, 4) transitions of Eu3+ ion, the most intense emission of Eu3+ in LaAlO3 was registered for the transition 5D07F1, for 5% of Eu3+. The recorded TL glow curves of excited samples showed a main TL peak, the main peak appeared its maximum as a function of excitation energy. The investigation demonstrates that polycrystalline LaAlO3:Eu3+ powders calcined at 1600°C have interesting luminescent characteristics.

Cite this paper

Hernández, A. , de León Alfaro, M. , Villatoro, A. , Falcony, C. , Montalvo, T. and Medina, J. (2017) Luminescence Characteristics of LaAlO3:Eu3+ Obtained by Modified Pechini’s Method. Open Journal of Synthesis Theory and Applications, 6, 1-12. doi: 10.4236/ojsta.2017.61001.

Copyright © 2018 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.