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2024
ACL
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F.Bour, J.-R.Duclère, P.Carles, S.Chenu, M.Allix, J.-L.Auguste, G.Humbert, G.Delaizir, 'Broadband luminescence of Ni2+-doped Zn(GaAl1−)2O4-based glass–ceramics', International Journal of Applied Glass Science 15 440 (2024) doi:10.1111/ijag.16681
Ni2+-doped glass–ceramics containing Zn(GaxAlx−1)2O4 crystals were successfully
synthetized using both parent glass crystallization (Technique 1) and a
direct dopingmethod also called “frozen sorbet” (Technique 2) to get a ZnGa2O4
crystal/glass composite. The frozen sorbet technique allows the survival of
∼10 nm crystalline particles. Both materials are further crystallized near their
respective temperature of crystallization to get glass–ceramics with the stabilization
of Zn(GaxAlx−1)2O4 crystals. Although these two materials exhibit the
same glass transition temperature, a shift in the crystallization temperature is
observed. The glass–ceramics are transparent in the near infrared range, and the
Ni2+ doping provides a broadband emission centered around 1300 nmwith a full
width at half-maximum (FWHM) equal to 228 nm. The structure, microstructure,
and thermal and optical properties of these materials are discussed in the present study.
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