Room temperature cathodoluminescence quenching of Er3+ in AlNOEr

Brien, V. and Edwards, P.R. and Boulet, P. and O'Donnell, K.P. (2019) Room temperature cathodoluminescence quenching of Er3+ in AlNOEr. Journal of Luminescence, 205. pp. 97-101. ISSN 0022-2313 (https://doi.org/10.1016/j.jlumin.2018.09.012)

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Abstract

This paper reports a cathodoluminescence (CL) spectroscopic study of nanogranular AlNOEr x samples with erbium content, x, in the range 0.5–3.6 at%. A wide range of erbium concentration was studied with the aim of understanding the concentration quenching of CL. The composition of thin films, deposited by radiofrequency reactive magnetron sputtering, was accurately determined by Energy Dispersive X-ray Spectroscopy (EDS). CL emission was investigated in the extended visible spectral range from 350 nm to 850 nm. The critical concentration of luminescent activator Er 3+ above which CL quenching occurs is 1%; the corresponding critical distance between Er 3+ ions in AlNOEr x is about 1.0 nm. The quenching mechanism is discussed. We discount an exchange-mediated interaction in favour of a multipole-multipole phonon-assisted interaction.

  • Item type:Article
    ID code:65386
    Dates:
    Date
    Event
    31 January 2019
    Published
    5 September 2018
    Published Online
    4 September 2018
    Accepted
    6 April 2018
    Submitted
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:07 Sep 2018 09:45
    Last modified:09 Apr 2024 00:16
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/65386
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