Abstract
The impact of tin (IV-Sn4+) doping into rhombohedral barium titanate (BaTiO3) towards the enhancement of second harmonic generation (SHG) was studied. XRD analysis confirms retention of rhombohedral symmetry in Sn4+ doped BaTiO3. UV-Vis absorption study reveals that Sn4+ doping has no significant effect on the optical band gap of BaTiO3. Raman spectrum portrays that undoped and Sn4+ doped BaTiO3 nanopowder exhibits Raman active modes of rhombohedral symmetry. The studies displays that Sn4+ doped BaTiO3 has created non-centrosymmetry, which could be utilized for enhancement in SHG and possibility to improve the efficiency in rhombohedral BaTiO3 based solar cells.
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