Growth of semiconductor nanostructures based on tin and antimony oxides: study of structural and electronic transport properties

• Grant number: 15/21816-4
• Support Opportunities: Regular Research Grants
• Start date: July 01, 2016
• End date: September 30, 2018
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Olivia Maria Berengue
• Grantee: Olivia Maria Berengue
• Host Institution: Faculdade de Engenharia (FEG). Universidade Estadual Paulista (UNESP). Campus de Guaratinguetá. Guaratinguetá , SP, Brazil
• Associated researchers: Adenilson José Chiquito ; Maurício Ribeiro Baldan

Abstract

It is the aim of this project to obtain the conditions to grow oxide nanostructures such asSnO2, Sn3O4, Sb:SnO2 e Sb2O3 by using the VLS (vapor-liquid-solid) and VS (vapor-solid) methods. Such materials are attractive because they are produced through low cost synthesis routes if compared with those used in classical semiconductors and because of their widespread use in various types of electronic devices. Specifically, structural features of the synthesized samples will be investigated as well as the electronic transport mechanisms in the nanostructures taking into account the presence of structural and electronic disorder, the dimensionality of the samples and presence of doping atoms. The investigations here proposed will enable not only the control of the transport properties of nanostructures, but also the improvement and development of more efficient routes of growth. Obtained the samples and constructed the devices, the study of the current transport mechanisms taking into account parameters that influence the performance and stability of a system based on a nanostructured semiconductor material will be performed. By creating a solid infrastructure, we intend to consolidate a new research line at the Department of Physics and Chemistry of the Faculty of Engineering Guaratinguetá, facing the growth of nanostructures and development of electronic devices based on them. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BERENGUE, OLIVIA M.; CHIQUITO, ADENILSON J.. Direct evidence of traps controlling the carriers transport in SnO2 nanobelts. JOURNAL OF SEMICONDUCTORS, v. 38, n. 12, DEC 2017. (13/19692-0, 15/21816-4)

ALVARENGA, GABRIEL. M. M.; PALOMBARINI, JULIO; GONCALVES, ROSANA. A. A.; BERENGUE, OLIVIA. M. M.; NUNES, RONALDO. S. S.; SANTOS, SYDNEY. F. F.; VILLULLAS, HEBE. M. M.; CIAPINA, EDUARDO. G. G.. Formic acid oxidation on Pd/RuO₂: does the RuO₂ support enhance the electrocatalytic activity of Pd nanoparticles?. Journal of Solid State Electrochemistry, v. 27, n. 9, p. 13-pg., 2023-05-23. (15/21816-4, 18/20780-4)

GONCALVES, ROSANA A.; DA SILVA BARROS, HERICK H.; ARAUJO, LUANA S.; ANTUNES, ERICA F.; QUADE, ANTJE; TEODORO, MARCIO D.; BALDAN, MAURICIO R.; BERENGUE, OLIVIA M.. Suppression of vapor-liquid-solid (VLS) mechanism in the growth of alpha-Sb2O4 nanobelts by a vapor-deposition approach. MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, v. 134, NOV 1 2021. (15/21816-4)

GONCALVES, ROSANA A.; BALDAN, MAURICIO R.; CIAPINA, EDUARDO G.; BERENGUE, OLIVIA M.. Nanostructured Pd/Sb2O3: A new and promising fuel cell electrocatalyst and non-enzymatic amperometric sensor for ethanol. Applied Surface Science, v. 491, p. 9-15, OCT 15 2019. (15/21816-4)