Charge-Based Compact Modeling of Capacitances in Staggered Multi-Finger OTFTs

This journal paper introduces a charge-based approach for the calculation of charges and capacitances in staggered organic thin-film transistors (OTFTs). Based on an already existing DC model, the charges are yielded in an analytical and compact form. A linear charge partitioning scheme is applied t...

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Bibliographic Details
Published in:IEEE journal of the Electron Devices Society 2020, Vol.8, p.396-406
Main Authors: Leise, Jakob, Pruefer, Jakob, Darbandy, Ghader, Seifaei, Masoud, Manoli, Yiannos, Klauk, Hagen, Zschieschang, Ute, Iniguez, Benjamin, Kloes, Alexander
Format: Article
Language:English
Subjects:
Capacitance
Charge density
charge-based model
compact modeling
Computer simulation
Differential amplifiers
Logic gates
Mathematical model
Orbits
Organic thin film transistors
OTFT
Semiconductor devices
Thin film transistors
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Summary:This journal paper introduces a charge-based approach for the calculation of charges and capacitances in staggered organic thin-film transistors (OTFTs). Based on an already existing DC model, the charges are yielded in an analytical and compact form. A linear charge partitioning scheme is applied to ascribe charges to the drain/source side of the channel. The final equation is only dependent on geometrical parameters and the charge densities at the drain/source end of the channel. Furthermore, the fringing regions in fabricated devices are taken into account. The compact model is implemented in Verilog-A and the capacitances are compared to Sentaurus TCAD simulation results as well as measurement data. Additionally, simulation results for a differential amplifier are compared to measurements. The advantage of this model is its unique formulation covering all operation regimes.
ISSN:2168-6734
2168-6734
DOI:10.1109/JEDS.2020.2978400