A nanocrystalline hematite film prepared from iron(III) chloride precursor

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• 作者：Jiri Frydrych ; Libor Machala ; Martin Hermanek ; Ivo Medrik ; Miroslav Mashlan ; Jiri Tucek ; Jiri Pechousek ; Virender K. Sharma
• 关键词：Deposition process ; Heat treatment ; Hydrogen ; Iron oxide ; Mö ; ssbauer spectroscopy ; Nanostructures
• 刊名：Thin Solid Films
• 出版年：2010
• 出版时间：31 August 2010
• 年：2010
• 卷：518
• 期：21
• 页码：5916-5919
• 全文大小：644 K

文摘

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.