Organic Thin-Film Transistors as Gas Sensors: A Review

Autor(es)

Cavallari, Marco Roberto ^{[1, 2]} ; Pastrana, Loren Mora ^[2] ; Sosa, Carlos Daniel Flecha ^[1] ; Marquina, Alejandra Maria Rodriguez ^[1] ; Izquierdo, Jose Enrique Eirez ^[2] ; Fonseca, Fernando Josepetti ^[2] ; Amorim, Cleber Alexandre de ^[3] ; Paterno, Leonardo Giordano ^[4] ; Kymissis, Ioannis ^[5]

Afiliação do(s) autor(es)

^[1] Univ Fed Integracao Latino Americana, Engn Energia, BR-85866000 Foz Do Iguacu, PR - Brazil

^[2] Univ Sao Paulo, Dept Engn Sistemas Eletron, Escola Politecn, BR-05508010 Sao Paulo, SP - Brazil

^[3] Univ Estadual Paulista Julio Mesquita Filho UNESP, Fac Ciencias & Engn, Dept Engn Biossistemas, Campus Tupa, BR-17602496 Tupa, SP - Brazil

^[4] Univ Brasilia, Inst Quim, Lab Pesquisa Polimeros & Nanomat, BR-70910900 Brasilia, DF - Brazil

^[5] Columbia Univ, Dept Elect Engn, New York, NY 10027 - USA

• Tipo de documento: Artigo de Revisão
• Fonte: MATERIALS; v. 14, n. 1 JAN 2021.
• Citações Web of Science: 0

Resumo

Organic thin-film transistors (OTFTs) are miniaturized devices based upon the electronic responses of organic semiconductors. In comparison to their conventional inorganic counterparts, organic semiconductors are cheaper, can undergo reversible doping processes and may have electronic properties chiefly modulated by molecular engineering approaches. More recently, OTFTs have been designed as gas sensor devices, displaying remarkable performance for the detection of important target analytes, such as ammonia, nitrogen dioxide, hydrogen sulfide and volatile organic compounds (VOCs). The present manuscript provides a comprehensive review on the working principle of OTFTs for gas sensing, with concise descriptions of devices' architectures and parameter extraction based upon a constant charge carrier mobility model. Then, it moves on with methods of device fabrication and physicochemical descriptions of the main organic semiconductors recently applied to gas sensors (i.e., since 2015 but emphasizing even more recent results). Finally, it describes the achievements of OTFTs in the detection of important gas pollutants alongside an outlook toward the future of this exciting technology. (AU)

• Processo FAPESP: 13/50440-7 - Análise da qualidade da água on line (ACQUA-OnLine)
• Beneficiário: Fernando Josepetti Fonseca
• Modalidade de apoio: Auxílio à Pesquisa - Parceria para Inovação Tecnológica - PITE
• Processo FAPESP: 15/08566-9 - Sensores de gás a base de transistores de filmes finos orgânicos
• Beneficiário: Marco Roberto Cavallari
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 19/18963-6 - Estudo do comportamento de sensores de CO, CO2 e VOCs (compostos orgânicos voláteis) à base de nanofios de SnO2
• Beneficiário: Cleber Alexandre de Amorim
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/19420-0 - Sensores de gás a base de transistores de filmes finos orgânicos
• Beneficiário: Marco Roberto Cavallari
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado