A nanocrystalline hematite film prepared from iron(III) chloride precursor |
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| Authors: | Jiri Frydrych Libor Machala Ivo Medrik Jiri Tucek Virender K. Sharma |
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| Affiliation: | a Centre for Nanomaterial Research and Department of Experimental Physics, Faculty of Science, Palacky University, 17, listopadu 12, 771 46 Olomouc, Czech Republic
b Chemistry Department, Florida Institute of Technology, 150 West University Boulevard, Melbourne, FL 32901, USA |
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| Abstract: | This paper deals with a simple and low-cost method developed to deposit hematite (α-Fe2O3) layers on a fluorine-doped tin oxide (FTO/F:SnO2) substrate by thermal decomposition of solid iron(III) chloride hexahydrate (FeCl3⋅ 6H2O). Deposition procedure takes place through chemical intermediate iron(III) oxide chloride (FeOCl) film. A crucial influence of atmosphere dynamics involved in the calcination process of FeOCl has been observed. As-deposited films were characterized by means of Conversion Electron Mössbauer Spectroscopy (CEMS), Grazing Angle X-Ray Diffractometry (GAXRD), Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) analysis. Final nanocrystalline hematite film with a cactus-field-like design consists of 20 nm thick porous crystal plates. A process of hematite doping by tin atoms from substrate coating is also discussed. |
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| Keywords: | Deposition process Heat treatment Hydrogen Iron oxide Mö ssbauer spectroscopy Nanostructures |
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