A theoretical model for the time varying current in organic electrochemical transistors in a dynamic regime

作者：Gentile Francesco; Delmonte Davide; Solzi Massimo; Villani Marco; Iannotta Salvatore; Zappettini Andrea; Coppede Nicola^*

来源：Organic Electronics, 2016, 35: 59-64.

DOI：10.1016/j.orgel.2016.05.001

• Organic electro chemical transistor
• Conduction model
• Conductive polymer
• Ionic sensing
• Textile device
• Alternate potential doping

The dynamic interaction between cations and doped conductive polymer is at the basis of the working principles of organic electrochemical transistor devices. In this letter, we describe a theoretical model for the transport of saline ions in an electrolyte under the influence of an external voltage in a dynamic regime. We show how this scheme can be used to derive the time varying response and current generated by a conductive PEDOT:PSS polymer based OECT device interacting with those ions. The simulated output of the system displays a very high sensitivity on the parameters of the process including charge, size and concentration of the ions, and the frequency of operation of the device. The proposed model can be used to analyze the activity of an OECT device to derive the physical characteristics of individual species in a solution.

• 出版日期2016-8