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Gas sensors from organic thin-film transistors

Grant number: 15/08566-9
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): September 26, 2015
Effective date (End): September 25, 2016
Field of knowledge:Engineering - Electrical Engineering
Principal Investigator:Fernando Josepetti Fonseca
Grantee:Marco Roberto Cavallari
Supervisor abroad: Ioannis Kymissis
Home Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Local de pesquisa : Columbia University in the City of New York, United States  
Associated to the scholarship:13/19420-0 - Gas sensors from organic thin-film transistors, BP.PD


Organic Thin-Film Transistors (OTFTs) are the base blocks of electronic circuits and, usually, present a field-effect device structure. Due to its easy processability, these devices offer innumerous applications, such as flexible displays, radio-frequency identification tags, textile electronics and sensors (e.g. chemical, biological and pressure). Besides, there is a demand for small, portable and cheap gadgets, mainly for in-situ medical diagnosis, environmental and food monitoring, drug delivery, chemical and biological weapons detection, and for the confection of electronic noses and tongues. In this context, the objective of this project lies in the development of sensors from organic thin-film transistors for the detection of gaseous analytes as volatile organic compounds (VOCs). The innovation consists in the application in OTFTs of recently synthesized organic materials, including commercially available as well as from scientific collaborators. The study must be composed of an investigation of environmental factors linked to device degradation, as well as each material sensitivity and specificity to gaseous analytes.

Scientific publications
(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)
CAVALLARI, MARCO R.; BRAGA, GUILHERME S.; DA SILVA, MAURO F. P.; IZQUIERDO, JOSE E. E.; PATERNO, LEONARDO G.; DIRANI, ELY A. T.; KYMISSIS, IOANNIS; FONSECA, FERNANDO J. A Hybrid Electronic Nose and Tongue for the Detection of Ketones: Improved Sensor Orthogonality Using Graphene Oxide-Based Detectors. IEEE SENSORS JOURNAL, v. 17, n. 7, p. 1971-1980, APR 1 2017. Web of Science Citations: 9.

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