Influence of the spray pyrolysis seeding and growth parameters on the structure and optical properties of ZnO nanorod arrays

ZnO nanorods (NRs) were grown on fluorine doped tin oxide (FTO) substrates at low temperatures (90 °C) from Zn 2+ precursors in alkaline media previously seeded with ZnO nanoparticles. These were deposited onto the FTO substrate heated at 350 °C by spray pyrolysis of a Zn acetate solution in a water...

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Autores principales:	Rodríguez, J., Feuillet, G., Donatini, F., Onna, D., Sanchez, L., Candal, R., Marchi, M.C., Bilmes, S.A., Chandezon, F.
Formato:	JOUR
Materias:	Chemical synthesis Nanostructures Optical properties Semiconductors Thin films Vapour deposition Alkalinity Cathodoluminescence Deposition Ethanol Film growth Mixtures Nanocomposites Nanorods Organic solvents Scanning electron microscopy Semiconductor materials Spray pyrolysis Stacking faults Substrates Synthesis (chemical) Tin oxides X ray diffraction Zinc Zinc oxide Zinc sulfide Cathodoluminescence spectroscopy Deep level emission Fluorine doped tin oxide Near band edge emissions Solvent evaporation UV-visible absorption Water ethanol mixtures
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_02540584_v151_n_p378_Rodriguez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_02540584_v151_n_p378_Rodriguez
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spelling	todo:paper_02540584_v151_n_p378_Rodriguez2023-10-03T15:11:30Z Influence of the spray pyrolysis seeding and growth parameters on the structure and optical properties of ZnO nanorod arrays Rodríguez, J. Feuillet, G. Donatini, F. Onna, D. Sanchez, L. Candal, R. Marchi, M.C. Bilmes, S.A. Chandezon, F. Chemical synthesis Nanostructures Optical properties Semiconductors Thin films Vapour deposition Alkalinity Cathodoluminescence Deposition Ethanol Film growth Mixtures Nanocomposites Nanorods Nanostructures Organic solvents Scanning electron microscopy Semiconductor materials Spray pyrolysis Stacking faults Substrates Synthesis (chemical) Thin films Tin oxides X ray diffraction Zinc Zinc oxide Zinc sulfide Cathodoluminescence spectroscopy Deep level emission Fluorine doped tin oxide Near band edge emissions Solvent evaporation UV-visible absorption Vapour deposition Water ethanol mixtures Optical properties ZnO nanorods (NRs) were grown on fluorine doped tin oxide (FTO) substrates at low temperatures (90 °C) from Zn 2+ precursors in alkaline media previously seeded with ZnO nanoparticles. These were deposited onto the FTO substrate heated at 350 °C by spray pyrolysis of a Zn acetate solution in a water ethanol mixture. The structure of seeds was tuned by the ethanol to water ratio, Γ, which controls the solvent evaporation rate of drops impinging the substrate. From a detailed characterization using a combination of scanning electron microscopy, X-ray diffraction, UV-visible absorption and cathodoluminescence spectroscopies, the dependence of the morphology and optical properties of the ZnO NRs on the seeding conditions was demonstrated. NRs grown on seeds deposited from solutions with Γ in the 0.03-0.06 range - i.e. when the surface excess of ethanol in the water-ethanol mixture has a maximum - show thinner average diameters and stacking faults due to the presence of zinc blende domains embedded into an overall wurtzite NR. They furthermore exhibit blue-shifted near band edge emission peak and a high deep level emission in cathodoluminescence. All these findings support the use of spray pyrolysis as a simple and reproducible way to control the seeds deposition, influencing the growth, the structure and the optical properties of the final ZnO NRs. Fil:Onna, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Marchi, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02540584_v151_n_p378_Rodriguez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Chemical synthesis Nanostructures Optical properties Semiconductors Thin films Vapour deposition Alkalinity Cathodoluminescence Deposition Ethanol Film growth Mixtures Nanocomposites Nanorods Nanostructures Organic solvents Scanning electron microscopy Semiconductor materials Spray pyrolysis Stacking faults Substrates Synthesis (chemical) Thin films Tin oxides X ray diffraction Zinc Zinc oxide Zinc sulfide Cathodoluminescence spectroscopy Deep level emission Fluorine doped tin oxide Near band edge emissions Solvent evaporation UV-visible absorption Vapour deposition Water ethanol mixtures Optical properties
spellingShingle	Chemical synthesis Nanostructures Optical properties Semiconductors Thin films Vapour deposition Alkalinity Cathodoluminescence Deposition Ethanol Film growth Mixtures Nanocomposites Nanorods Nanostructures Organic solvents Scanning electron microscopy Semiconductor materials Spray pyrolysis Stacking faults Substrates Synthesis (chemical) Thin films Tin oxides X ray diffraction Zinc Zinc oxide Zinc sulfide Cathodoluminescence spectroscopy Deep level emission Fluorine doped tin oxide Near band edge emissions Solvent evaporation UV-visible absorption Vapour deposition Water ethanol mixtures Optical properties Rodríguez, J. Feuillet, G. Donatini, F. Onna, D. Sanchez, L. Candal, R. Marchi, M.C. Bilmes, S.A. Chandezon, F. Influence of the spray pyrolysis seeding and growth parameters on the structure and optical properties of ZnO nanorod arrays
topic_facet	Chemical synthesis Nanostructures Optical properties Semiconductors Thin films Vapour deposition Alkalinity Cathodoluminescence Deposition Ethanol Film growth Mixtures Nanocomposites Nanorods Nanostructures Organic solvents Scanning electron microscopy Semiconductor materials Spray pyrolysis Stacking faults Substrates Synthesis (chemical) Thin films Tin oxides X ray diffraction Zinc Zinc oxide Zinc sulfide Cathodoluminescence spectroscopy Deep level emission Fluorine doped tin oxide Near band edge emissions Solvent evaporation UV-visible absorption Vapour deposition Water ethanol mixtures Optical properties
description	ZnO nanorods (NRs) were grown on fluorine doped tin oxide (FTO) substrates at low temperatures (90 °C) from Zn 2+ precursors in alkaline media previously seeded with ZnO nanoparticles. These were deposited onto the FTO substrate heated at 350 °C by spray pyrolysis of a Zn acetate solution in a water ethanol mixture. The structure of seeds was tuned by the ethanol to water ratio, Γ, which controls the solvent evaporation rate of drops impinging the substrate. From a detailed characterization using a combination of scanning electron microscopy, X-ray diffraction, UV-visible absorption and cathodoluminescence spectroscopies, the dependence of the morphology and optical properties of the ZnO NRs on the seeding conditions was demonstrated. NRs grown on seeds deposited from solutions with Γ in the 0.03-0.06 range - i.e. when the surface excess of ethanol in the water-ethanol mixture has a maximum - show thinner average diameters and stacking faults due to the presence of zinc blende domains embedded into an overall wurtzite NR. They furthermore exhibit blue-shifted near band edge emission peak and a high deep level emission in cathodoluminescence. All these findings support the use of spray pyrolysis as a simple and reproducible way to control the seeds deposition, influencing the growth, the structure and the optical properties of the final ZnO NRs.
format	JOUR
author	Rodríguez, J. Feuillet, G. Donatini, F. Onna, D. Sanchez, L. Candal, R. Marchi, M.C. Bilmes, S.A. Chandezon, F.
author_facet	Rodríguez, J. Feuillet, G. Donatini, F. Onna, D. Sanchez, L. Candal, R. Marchi, M.C. Bilmes, S.A. Chandezon, F.
author_sort	Rodríguez, J.
title	Influence of the spray pyrolysis seeding and growth parameters on the structure and optical properties of ZnO nanorod arrays
title_short	Influence of the spray pyrolysis seeding and growth parameters on the structure and optical properties of ZnO nanorod arrays
title_full	Influence of the spray pyrolysis seeding and growth parameters on the structure and optical properties of ZnO nanorod arrays
title_fullStr	Influence of the spray pyrolysis seeding and growth parameters on the structure and optical properties of ZnO nanorod arrays
title_full_unstemmed	Influence of the spray pyrolysis seeding and growth parameters on the structure and optical properties of ZnO nanorod arrays
title_sort	influence of the spray pyrolysis seeding and growth parameters on the structure and optical properties of zno nanorod arrays
url	http://hdl.handle.net/20.500.12110/paper_02540584_v151_n_p378_Rodriguez
work_keys_str_mv	AT rodriguezj influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT feuilletg influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT donatinif influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT onnad influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT sanchezl influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT candalr influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT marchimc influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT bilmessa influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT chandezonf influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays
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Influence of the spray pyrolysis seeding and growth parameters on the structure and optical properties of ZnO nanorod arrays

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