Size Dependent Physical Properties of Nanostructured α-Fe2O3 Thin Films Grown by Successive Ionic Layer Adsorption and Reaction Method for Antibacterial Application
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2015年第1期
论文作者：M.R.Belkhedkar
文章页码：1 - 9
摘 要：Thin films of nanostructured α-Fe2O3 with thickness of 1 56,203 and 251 nm were deposited by successive ionic layer adsorption and reaction（SILAR） method onto glass substrates using FeCl3-6H2O and NaOH as cationic and anionic precursors.The X-ray diffraction studies revealed that,α-Fe2O3 thin films are nanocrystalline in nature with rhombohedral structure.The morphological properties were investigated by field emission scanning electron and atomic force microscopy.The optical studies showed that α-Fe2O3 exhibits direct as well as indirect optical band gap energy.The electrical resistivity of α-Fe2O3 at 305 K decreases from 11.76×102 to9.46 × 102 Ω cm as film thickness increases from 156 to 251 nm.The thermo-emf measurements confirmed that α-Fe2O3 exhibits n-type conductivity.The nanocrystalline α-Fe2O3 exhibits antibacterial character against Staphylococcus aureus and its efficiency increases from 37.50%to 87.50%depending on crystallite size.
M.R.Belkhedkar1,2
摘 要：Thin films of nanostructured α-Fe2O3 with thickness of 1 56,203 and 251 nm were deposited by successive ionic layer adsorption and reaction（SILAR） method onto glass substrates using FeCl3-6H2O and NaOH as cationic and anionic precursors.The X-ray diffraction studies revealed that,α-Fe2O3 thin films are nanocrystalline in nature with rhombohedral structure.The morphological properties were investigated by field emission scanning electron and atomic force microscopy.The optical studies showed that α-Fe2O3 exhibits direct as well as indirect optical band gap energy.The electrical resistivity of α-Fe2O3 at 305 K decreases from 11.76×102 to9.46 × 102 Ω cm as film thickness increases from 156 to 251 nm.The thermo-emf measurements confirmed that α-Fe2O3 exhibits n-type conductivity.The nanocrystalline α-Fe2O3 exhibits antibacterial character against Staphylococcus aureus and its efficiency increases from 37.50%to 87.50%depending on crystallite size.
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