Amorphous to anatase transformation in atomic layer deposited titania thin films induced by hydrothermal treatment at 120°C

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dc.contributor.authorZhang, Zen_AU
dc.contributor.authorTriani, Gen_AU
dc.contributor.authorFan, LJen_AU
dc.date.accessioned2010-09-03T01:58:00Zen_AU
dc.date.available2010-09-03T01:58:00Zen_AU
dc.date.issued2008-09en_AU
dc.date.statistics2008-09en_AU
dc.description.abstractHydrothermal treatment has been applied successfully to convert amorphous titania films to crystalline anatase at 120°C, a temperature compatible with most polymeric substrates. The amorphous films were deposited at 80°C using atomic layer deposition (ALD). The crystallinity of the films was monitored by x-ray absorption near edge structure (XANES), and the film composition was determined by x-ray photoelectron spectroscopy (XPS). The effect of precursor chemistry and substrate material was investigated. It was found that titania films produced from Ti isopropoxide are easier to crystallize than those from Ti tetrachloride as the Ti precursor. The amorphous to crystalline transformation can be achieved more readily with films deposited on Si than polycarbonate substrates. The effect of a “seed” layer on the amorphous to crystalline transformation was also studied. Preformed anatase crystallites between the Si substrate and the amorphous film were shown to accelerate the crystallization process. The possible mechanisms responsible for the phase transformation are discussed. © 2008, Materials Research Societyen_AU
dc.identifier.citationZhang, Z., Triani, G., & Fan, L. J. (2008). Amorphous to anatase transformation in atomic layer deposited titania thin films induced by hydrothermal treatment at 120°C. Journal of Materials Research, 23(9), 2472-2479. doi:10.1557/JMR.2008.0297en_AU
dc.identifier.govdoc2601en_AU
dc.identifier.issn0884-2914en_AU
dc.identifier.issue9en_AU
dc.identifier.journaltitleJournal of Materials Researchen_AU
dc.identifier.pagination2472-2479en_AU
dc.identifier.urihttp://dx.doi.org/10.1557/JMR.2008.0297en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2441en_AU
dc.identifier.volume23en_AU
dc.language.isoenen_AU
dc.publisherMaterials Research Societyen_AU
dc.subjectThin filmsen_AU
dc.subjectTitaniumen_AU
dc.subjectAmorphous stateen_AU
dc.subjectDepositionen_AU
dc.subjectHydrothermal systemsen_AU
dc.subjectPhase transformationsen_AU
dc.titleAmorphous to anatase transformation in atomic layer deposited titania thin films induced by hydrothermal treatment at 120°Cen_AU
dc.typeJournal Articleen_AU
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