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Eu 3+ doped glass ceramics embedding ZnO quantum dots (QDs) were successfully prepared by a sol–gel method. High-resolution transmission electron microscopy (HRTEM) observations revealed that ZnO QDs with size of 3–6nm precipitated homogeneously among the SiO 2 glassy matrix after thermal treatment of the precursor sample. Such glass ceramics show a high transparency in the visible-infrared...
Transparent glass ceramics containing YF 3 nano-crystals were fabricated by heat treatment of the SiO 2 –Al 2 O 3 –NaF–YF 3 –LnF 3 (Ln=Er, Yb) glasses. X-ray diffraction and transmission electron microscopy analyses evidenced the homogeneous distribution of spherical YF 3 nano-crystals sized 25–30nm among the glassy matrix. Energy dispersive...
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