Optimal composition of europium gallium oxide thin films for device applications

Thumbnail Image



Journal Title

Journal ISSN

Volume Title

Repository Usage Stats


Citation Stats


Europium gallium oxide (EuxGa1-x)(2)O-3 thin films were deposited on sapphire substrates by pulsed laser deposition with varying Eu content from x=2.4 to 20 mol %. The optical and physical effects of high europium concentration on these thin films were studied using photoluminescence (PL) spectroscopy, x-ray diffraction (XRD), and Rutherford backscattering spectrometry. PL spectra demonstrate that emission due to the D-5(0) to F-7(J) transitions in Eu3+ grows linearly with Eu content up to 10 mol %. Time-resolved PL indicates decay parameters remain similar for films with up to 10 mol % Eu. At 20 mol %, however, PL intensity decreases substantially and PL decay accelerates, indicative of parasitic energy transfer processes. XRD shows films to be polycrystalline and beta-phase for low Eu compositions. Increasing Eu content beyond 5 mol % does not continue to modify the film structure and thus, changes in PL spectra and decay cannot be attributed to structural changes in the host. These data indicate the optimal doping for optoelectronic devices based on (EuxGa1-x)(2)O-3 thin films is between 5 and 10 mol %. (C) 2010 American Institute of Physics. [doi:10.1063/1.3319670]





Wellenius,P.;Smith,E. R.;LeBoeuf,S. M.;Everitt,H. O.;Muth,J. F.. 2010. Optimal composition of europium gallium oxide thin films for device applications. Journal of Applied Physics 107(10): 103111-103111.

Published Version (Please cite this version)


Publication Info

Wellenius, P, ER Smith, SM Leboeuf, HO Everitt and JF Muth (2010). Optimal composition of europium gallium oxide thin films for device applications. 10.1063/1.3319670 Retrieved from https://hdl.handle.net/10161/3324.

This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.

Unless otherwise indicated, scholarly articles published by Duke faculty members are made available here with a CC-BY-NC (Creative Commons Attribution Non-Commercial) license, as enabled by the Duke Open Access Policy. If you wish to use the materials in ways not already permitted under CC-BY-NC, please consult the copyright owner. Other materials are made available here through the author’s grant of a non-exclusive license to make their work openly accessible.