Reduction of mercury loss in fluorescent lamps coated with thin metal-oxide films

V. D. Hildenbrand, C. J.M. Denissen, A. J.H.P. Van Der Pol, A. H.C. Hendriks, C. Van Der Marel, J. H.M. Snijders, Y. Tamminga, H. H. Brongersma, Minna Viitanen

    Research output: Contribution to journalArticleAcademicpeer-review

    10 Citations (Scopus)

    Abstract

    The absorption of mercury into glass and metal-oxide coated glass tubes is investigated with the aid of Rutherford backscattering spectroscopy (RBS), X-ray photoelectron spectroscopy (XPS), low-energy ion scattering, and thermal desorption mass spectroscopy. The absorption reaction of bare glass with activated mercury species is strongly reduced when the glass is covered with a thin oxide film. The concentration profile of the mercury measured in the films with the aid of RBS varied between a homogeneous distribution and a higher concentration of mercury close to the discharge side of the coating. XPS showed that the oxidation state of the mercury at the surface of the coatings was between that of metallic mercury and mercury(II) oxide. Thermal desorption mass spectroscopy showed that at least two different states of bound mercury were involved. The combination of the thermal desorption mass spectroscopy and XPS led to the conclusion that direct mercury-metal-oxide interactions contribute to the bonding of the mercury.

    Original languageEnglish
    Pages (from-to)H147-H155
    Number of pages9
    JournalJournal of the Electrochemical Society
    Volume150
    Issue number7
    DOIs
    Publication statusPublished - Jul 2003

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    Copyright 2008 Elsevier B.V., All rights reserved.

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