Abstract
In this work pure and Hf-doped ZnO nanopowders were synthesized by cost-effective sol-gel technique to prepare ceramic pellets by isostatic pressing. Structural, optical and morphological properties of prepared samples were examined by XRD, FESEM, TEM, EDX, UV–vis, FTIR, Raman and PL measurements. Also the scintillation sensitivity of ceramics was studied by a 60Co radiation source. X-ray diffraction pattern analysis confirmed the hexagonal wurtzite structure of samples; Rietveld refinement for crystallite structure determined the lattice parameters of the nanopowders. FTIR and Raman results confirmed the presence of functional group and chemical bonding attributed to ZnO. FESEM image revealed that the size of HZO nanoparticles was obtained a bout 62 nm. For the first time prepared HZO ceramic showed suitable scintillation sensitivity to gamma ray and exhibited strong violet, blue and red emissions at room temperature. Fabricated ceramic showed good characteristics that can be applied for future photonic applications.
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