首页|Development of red luminescent nanocomposite based on calcium doped α-Zn2SiO4 nanoparticles embedded in silica matrix
Development of red luminescent nanocomposite based on calcium doped α-Zn2SiO4 nanoparticles embedded in silica matrix
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NSTL
Elsevier
? 2021 Elsevier B.V.Nanocomposite based on α-Zn2SiO4:Ca nanoparticles embedded in silica matrix was synthetized by sol-gel method followed by thermal treatment at high temperature. The structural, morphological and optical properties were investigated. XRD analysis presents weak willemite peaks at 600 °C which has become clearer at 1200 °C with a grain size of about 60 nm. Optical analysis reveals a decrement in bandgap value from 5.44 eV to 5.24 eV after the incorporation of calcium ions (Ca2+). The PL spectrum presents two emission bands in red region. The most intense one appears at 735 nm and can be attributed to Non Bridging Oxygen Hole Center (NBOH) emission while the second, located at 685 nm, is attributed to silanol group Si–OH. The obtained results prove that, the incorporation of calcium in the nanocomposite enhance the creation of very active deep centers promising for many advanced technological applications.
PhotoluminescenceSiO2/Zn2SiO4:Ca nanocompositeSol-gelStructural and morphological propertiesWillemite
Bessadok M.N.、Ahmed W.、El Mir L.、Bouzidi C.、Ihzaz N.、Barthou C.、Jeidi H.
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Laboratory of Physics of Materials and Nanomaterials Applied at Environment (LaPhyMNE) Faculty of Sciences in Gabes Gabes University
Laboratory of Physico-Chemistry of Mineral Materials and their Applications National Center for Research in Materials Sciences
Laboratory of Physico-chemistry of Materials Department of Physics Faculty of Sciences
Institute of NanoSciences in Paris (INSP) UPMC University Paris 6 CNRS UMR 7588
NSTL
Elsevier
