Non-Quasi-Static Modeling of Printed OTFTs

• 出版年: IEEE Journal of the Electron Devices Society
• 主要な著者: Antonio Valletta, Matteo Rapisarda, Mattia Scagliotti, Guglielmo Fortunato, Luigi Mariucci, Andrea Fabbri, Paolo Branchini, Sabrina Calvi
• フォーマット: 論文
• 言語: 英語
• 出版事項: IEEE 2023-01-01
• 主題: SPICE modeling; non-quasi-static modeling; organic thin-film-transistors; printed organic electronics; large signal model
• オンライン･アクセス: https://ieeexplore.ieee.org/document/10175528/
• ISSN: 2168-6734

A non-quasi-static compact model well suited for the simulation of the electrical behavior of printed organic thin-film transistors (OTFTs) is proposed and validated. The model is based on the discretization of the current continuity equation by using a spline collocation approach while the electrical transport in the organic semiconductor is described by the variable range hopping theory. The model accounts for the presence of parasitic regions that are often found in the layouts of printed OTFTs due to large process tolerances. The model has been implemented in the Verilog-A language and has been validated by a comparison with the capacitance vs. voltage (small signal) characteristics of the devices and measurements made on OTFT-based common-source amplifiers (large signal). A comparison with a quasi-static version of the model is reported.