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PHOTOCHEMICAL SYNTHESIS OF AZRO(3-X) THIN FILMS (A=BA, CA AND SR) AND THEIR CHARACTERIZATION

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dc.creatorCLAUDIA ANDREA CARO DÍAZ
dc.creatorGERARDO ANDRÉS CABELLO GUZMÁN
dc.creatorLUIS ENRIQUE LILLO ARROYO
dc.date2014
dc.date.accessioned2025-01-10T14:47:27Z
dc.date.available2025-01-10T14:47:27Z
dc.date.issued2014
dc.description.abstract(BA, CA, SR)ZRO3?X THIN FILMS WERE PREPARED BY A PHOTOCHEMICAL METHOD USING THIN FILMS OF ?-DIKETONATE COMPLEXES AS PRECURSORS. THE PHOTOLYSIS OF THESE FILMS INDUCES THE FRAGMENTATION OF THE 2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATE LIGAND AND THE PARTIAL REDUCTION OF METAL ION TOGETHER WITH VOLATILE ORGANIC COMPOUNDS AS SUB-PRODUCTS. WHEN THE METALLIC COMPLEXES ARE IRRADIATED IN AIR, THE FINAL PRODUCT OF THE REACTION ARE TERNARY METAL OXIDES. THE PHOTOREACTIVITY OF THESE FILMS WAS MONITORED BY FT-IR SPECTROSCOPY BY A PERIOD OF 72 H, FOLLOWED BY POST-ANNEALING AT 950 °C. X-RAY PHOTOELECTRON SPECTROSCOPY AND X-RAY DIFFRACTION TECHNIQUES WERE USED TO ANALYZE THE CHEMICAL COMPOSITION AND THE CRYSTALLINE STRUCTURE OF THE FILMS OBTAINED. THE RESULTS INDICATE THAT BA, CA, SR, ZR AND O ARE PRESENT IN THE FORM OF PEROVSKITA, PREFERABLY ADOPTING AN AMORPHOUS STRUCTURE. THE SURFACE MORPHOLOGY EXAMINED BY ATOMIC FORCE MICROSCOPY REVEALED A ROUGH AND IRREGULAR SURFACE. THE UV?VIS MEASUREMENTS SUGGEST A SLIGHT INCREASE IN THE OPTICAL BAND GAP VALUES, WHICH PROMOTE A REDUCTION OF THE INTERMEDIARY ENERGY LEVELS OR DEFECTS.
dc.formatapplication/pdf
dc.identifier.doi10.1016/j.ceramint.2013.12.118
dc.identifier.issn1873-3956
dc.identifier.issn0272-8842
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/8980
dc.languagespa
dc.publisherCERAMICS INTERNATIONAL
dc.relation.uri10.1016/j.ceramint.2013.12.118
dc.rightsPUBLICADA
dc.titlePHOTOCHEMICAL SYNTHESIS OF AZRO(3-X) THIN FILMS (A=BA, CA AND SR) AND THEIR CHARACTERIZATION
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.Otra ReparticionDEPARTAMENTO DE CIENCIAS BASICAS
ubb.SedeCHILLÁN
ubb.SedeCHILLÁN
ubb.SedeCHILLÁN
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