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Construction and characterization of vertical organic field effect transistors by using nanostructured materials as intermediate electrode

Grant number: 13/09963-6
Support type:Scholarships in Brazil - Doctorate (Direct)
Effective date (Start): September 01, 2013
Effective date (End): February 28, 2018
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Carlos Frederico de Oliveira Graeff
Grantee:Luíz Gustavo Simão Albano
Home Institution: Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil
Associated research grant:13/07296-2 - CDMF - Center for the Development of Functional Materials, AP.CEPID
Associated scholarship(s):14/25332-9 - Bioprotonic transistors using eumelanin thin films, BE.EP.DD


This direct doctorate project is based on the construction and characterization of Vertical Organic Field Effect Transistors (VOFETs) by using different nanostructured materials as intermediate electrode. Special attention will be given to obtaining an intermediate electrode that meets the requirements of this type of device, in other words, a good electrical conductor in such a manner that the electrical potential is uniform throughout the contact and with high permeability electric fields. For this, we proposed to use two nanostructures with attractive properties that enable this application: Carbon Nanotubes (CNTs) and Indium Tin Oxide nanowires (ITO nanowires). In order to obtain high quality in thin films based on these nanostructures, various deposition techniques such as dielectrophoresis, spin-coating and other possible techniques will be tested and evaluated in order to verify which technique is the most appropriate for the formation of thin films with properties required to compose the intermediate electrode devices. Initially, with purpose to obtain a significant improvement in the electrical characteristics of the devices, the ante and subsequent layers of VOFETs will be built by using materials previously selected, considering as principal variable only the intermediate electrode. The characterization of the transistors will be made from the obtained IxV curves of three terminals in order to obtain low values of leakage current, high values of transconductance and high rates ON/OFF. Finally, the success of this technology will allow the use of other materials in the different layers of the device, a possible alternative is the use of melanin as substitute in the organic layer. (AU)

Scientific publications (6)
(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)
FERNANDES, SILVIA L.; AFFONCO, LUCAS J.; JUNIOR, ROBERTO A. R.; DA SILVA, JOSE H. D.; LONGO, ELSON; GRAEFF, CARLOS F. DE O. Niobium Oxide Films Deposited by Reactive Sputtering: Effect of Oxygen Flow Rate. JOVE-JOURNAL OF VISUALIZED EXPERIMENTS, n. 151 SEP 2019. Web of Science Citations: 0.
SIMAO ALBANO, LUIZ GUSTAVO; PAULIN, JOAO VITOR; TRINO, LUCIANA DANIELE; FERNANDES, SILVIA LETICIA; DE OLIVEIRA GRAEFF, CARLOS FREDERICO. Ultraviolet-protective thin film based on PVA-melanin/rod-coated silver nanowires and its application as a transparent capacitor. Journal of Applied Polymer Science, v. 136, n. 30 AUG 10 2019. Web of Science Citations: 1.
FERNANDES, SILVIA LETICIA; SIMAO ALBANO, LUIZ GUSTAVO; AFFONCO, LUCAS JORGE; DIAS DA SILVA, JOSE HUMBERTO; LONGO, ELSON; DE OLIVEIRA GRAEFF, CARLOS FREDERICO. Exploring the Properties of Niobium Oxide Films for Electron Transport Layers in Perovskite Solar Cells. FRONTIERS IN CHEMISTRY, v. 7, FEB 6 2019. Web of Science Citations: 2.
TRINO, LUCIANA D.; ALBANO, LUIZ G. S.; BRONZE-UHLE, ERIKA S.; GEORGE, ANNE; MATHEW, MATHEW T.; LISBOA-FILHO, PAULO N. Physicochemical, osteogenic and corrosion properties of bio-functionalized ZnO thin films: Potential material for biomedical applications. CERAMICS INTERNATIONAL, v. 44, n. 17, p. 21004-21014, DEC 1 2018. Web of Science Citations: 1.
TRINO, LUCIANA D.; DIAS, LEONARDO F. G.; ALBANO, LUIZ G. S.; BRONZE-UHLE, ERIKA S.; RANGEL, ELIDIANE C.; GRAEFF, CARLOS F. O.; LISBOA-FILHO, PAULO N. Zinc oxide surface functionalization and related effects on corrosion resistance of titanium implants. CERAMICS INTERNATIONAL, v. 44, n. 4, p. 4000-4008, MAR 2018. Web of Science Citations: 15.
ALBANO, LUIZ G. S.; BORATTO, MIGUEL H.; NUNES-NETO, OSWALDO; GRAEFF, CARLOS F. O. Low voltage and high frequency vertical organic field effect transistor based on rod-coating silver nanowires grid electrode. ORGANIC ELECTRONICS, v. 50, p. 311-316, NOV 2017. Web of Science Citations: 10.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
ALBANO, Luíz Gustavo Simão. Estudo de materiais e dispositivos para eletrônica orgânica. 2018. 180 f. Doctoral Thesis - Universidade Estadual Paulista "Júlio de Mesquita Filho" Faculdade de Ciências (FC).

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