Effects of the Eu3+ concentration on the structural, optical and morphological properties of cubic Gd2O3 nanostructured thin films

Nanostructured Gd2O3: Eu3+ thin films were prepared by pulsed laser ablation technique. The dependence of structural, morphological and optical properties of these films on photoluminescence was systematically studied by varying the Eu3+ incorporation concentration. Micro-Raman and XRD analysis indi...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2009-08, Vol.2 (1), p.012029-6
Main Authors: Rajan, Geo, Vinodkumar, R, Pillai, V P Mahadevan, Gopchandran, K G
Format: Article
Language:English
Subjects:
Europium
Gadolinium oxides
Grain growth
Incorporation
Laser ablation
Morphology
Nanostructure
Optical properties
Photoelectric emission
Photoluminescence
Pulsed lasers
Thin films
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Summary:Nanostructured Gd2O3: Eu3+ thin films were prepared by pulsed laser ablation technique. The dependence of structural, morphological and optical properties of these films on photoluminescence was systematically studied by varying the Eu3+ incorporation concentration. Micro-Raman and XRD analysis indicate that Eu3+ incorporation strongly perturbs the cubic Gd2O3 structure and suppresses the grain growth. For 0.10 mol Eu3+ doped Gd2O3 films deposited under a vacuum of 10-6 mbar when subjected to annealing at 1173 K give transparent films exhibiting intense photoemission at 612 nm due to 5D0-7F2 transition. The Eu3+ incorporation concentration above 10 mol %, decreased the luminance intensity may be due to concentration quenching effect.
ISSN:1757-899X
1757-8981
1757-899X
DOI:10.1088/1757-899X/2/1/012029