Organic Thin-Film Transistors as Gas Sensors: A Review

Materials

CleberAlexandre de Amorim¹  LorenMora Pastrana²  JoséEnrique Eirez Izquierdo²  FernandoJosepetti Fonseca²  Ioannis Kymissis³  MarcoRoberto Cavallari⁴  CarlosDaniel Flecha Sosa⁴  AlejandraMaria Rodriguez Marquina⁴  LeonardoGiordano Paterno⁵ 

[1] Departamento de Engenharia de Biossistemas, Faculdade de Ciências e Engenharia (Câmpus de Tupã), Universidade Estadual Paulista Júlio de MesquitaFilho (UNESP), Tupã, SP 17602-496, Brazil;Departamento de Engenharia de Sistemas Eletrônicos, Escola Politécnica da Universidade de São Paulo, São Paulo, SP 05508-010, Brazil;Department of Electrical Engineering, Columbia University, New York, NY 10027-6902, USA;Engenharia de Energia, Universidade Federal da Integração Latino-Americana, Foz do Iguaçu, PR 85866-000, Brazil;Laboratório de Pesquisa em Polímeros e Nanomateriais, Instituto de Química, Universidade de Brasília, Brasília, DF 70910-900, Brazil;

关键词: flexible electronics;    organic semiconductors;    organic thin-film transistors;    organic field- effect transistors;    gas sensors;   

DOI  :  10.3390/ma14010003

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown