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Issue 15, 2016
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Transparent polycrystalline SrREGa3O7 melilite ceramics: potential phosphors for tuneable solid state lighting

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Abstract

Full and congruent crystallization from glass is applied to the SrREGa3O7 melilite family (RE = Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Y). This innovative process enables the synthesis of polycrystalline ceramics exhibiting high transparency both in the visible and near infrared regions, despite tetragonal crystal structures and micrometer scale grain sizes. Moreover, glass crystallization provides an original route to synthesize new crystalline phases which are not accessible via a classic solid state reaction, as demonstrated for SrYbGa3O7 and SrTmGa3O7. To illustrate the potential optical applications of such materials, SrGdGa3O7 transparent polycrystalline ceramics are doped with Dy3+ or Tb3+/Eu3+ in order to generate white light emission under UV excitation. It is foreseen that such transparent melilite ceramic phosphors, prepared via a cost-effective process, can be successfully used in solid state lighting devices of considerable technological interest.

Graphical abstract: Transparent polycrystalline SrREGa3O7 melilite ceramics: potential phosphors for tuneable solid state lighting

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Publication details

The article was received on 12 Feb 2016, accepted on 07 Mar 2016 and first published on 08 Mar 2016


Article type: Paper
DOI: 10.1039/C6TC00633G
Citation: J. Mater. Chem. C, 2016,4, 3238-3247
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    Transparent polycrystalline SrREGa3O7 melilite ceramics: potential phosphors for tuneable solid state lighting

    M. Boyer, A. J. F. Carrion, S. Ory, A. I. Becerro, S. Villette, S. V. Eliseeva, S. Petoud, P. Aballea, G. Matzen and M. Allix, J. Mater. Chem. C, 2016, 4, 3238
    DOI: 10.1039/C6TC00633G

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