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Thin films of barium and strontium titanate (BST), synthesized by the polymeric precursor solution and spin coated on [Pt (140nm)/Ti (10nm)/SiO 2 (1000nm)/Si] substrates were found to be photoluminescent at room temperature when heat treated below 973K, i.e. before their crystallization. First principles quantum mechanical techniques, based on density functional theory (DFT) were employed...
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