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 Zn2+ 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...
| Autores principales: | , , , , , , , , |
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| Formato: | Texto completo |
| Idioma: | Inglés |
| Publicado em: |
Elsevier Science BV
2015
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| Acesso em linha: | https://ri.unsam.edu.ar/handle/123456789/1002 |
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ds-123456789-1002 |
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dspace |
| institution |
Repositorio Institucional |
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RI |
| language |
Inglés |
| topic |
CHEMICAL SYNTHESIS NANOSTRUCTURES OPTICAL PROPERTIES SEMICONDUCTORS THIN FILMS CIENCIAS QUÍMICAS CIENCIAS NATURALES Y EXACTAS |
| spellingShingle |
CHEMICAL SYNTHESIS NANOSTRUCTURES OPTICAL PROPERTIES SEMICONDUCTORS THIN FILMS CIENCIAS QUÍMICAS CIENCIAS NATURALES Y EXACTAS Rodríguez, Juan Feuillet, Guy Donatini, Fabrice Onna, Diego Ariel Sanchez, Luis Candal, Roberto Jorge Marchi, María Claudia Aldabe, Sara Alfonsina Chandezon, Frédéric Influence of the spray pyrolysis seeding and growth parameters on the structure and optical properties of ZnO nanorod arrays |
| description |
ZnO nanorods (NRs) were grown on fluorine doped tin oxide (FTO) substrates at low temperatures (90 °C) from Zn2+ 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 |
Texto completo |
| author |
Rodríguez, Juan Feuillet, Guy Donatini, Fabrice Onna, Diego Ariel Sanchez, Luis Candal, Roberto Jorge Marchi, María Claudia Aldabe, Sara Alfonsina Chandezon, Frédéric |
| author_facet |
Rodríguez, Juan Feuillet, Guy Donatini, Fabrice Onna, Diego Ariel Sanchez, Luis Candal, Roberto Jorge Marchi, María Claudia Aldabe, Sara Alfonsina Chandezon, Frédéric |
| author_sort |
Rodríguez, Juan |
| 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 |
| publisher |
Elsevier Science BV |
| publishDate |
2015 |
| url |
https://ri.unsam.edu.ar/handle/123456789/1002 |
| work_keys_str_mv |
AT rodriguezjuan influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT feuilletguy influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT donatinifabrice influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT onnadiegoariel influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT sanchezluis influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT candalrobertojorge influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT marchimariaclaudia influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT aldabesaraalfonsina influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays AT chandezonfrederic influenceofthespraypyrolysisseedingandgrowthparametersonthestructureandopticalpropertiesofznonanorodarrays |
| _version_ |
1832793265296900096 |