Compact modeling of organic transistors with multi-finger contacts

Afra Al Ruzaiqi, Boyko Nikolov, Lawrence R. Chen, Helena Gleskova

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Abstract

Organic thin-film transistors (OTFTs) with multi-finger contacts based on dinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thio-phene (DNTT) exhibit near-zero turn-on voltage, hysteresis-free behavior, and high transconductance of 30-80 μA at VDS = VGS = −2 V. [1] In addition, common-source amplifiers based on such transistors deliver voltage gain even when the supply voltage is limited to 5 V, making them attractive for flexible/wearable analog sensors. This paper presents the results of compact modeling, implemented in Matlab Simulink, applied to such transistors. The measured transistor transfer characteristics are used to extract the parameters for the semi-empirical model. The model was validated in 3 ways on 8 OTFTs with varied geometries and substrates (glass or PEN). The validation included calculations of (a) transistor output characteristics, (b) a.c. drain currents for 1 Hz sinusoidal gate voltages, and (c) output voltages of the common-source amplifier, and their comparison to the measured data.
Original languageEnglish
Number of pages3
Publication statusPublished - 10 Jul 2019
EventIEEE International Conference on Flexible and Printable Sensors and Systems - Glasgow, United Kingdom
Duration: 7 Jul 201910 Jul 2019
https://fleps2019.org/

Conference

ConferenceIEEE International Conference on Flexible and Printable Sensors and Systems
Abbreviated titleIEEE FLEPS 2019
CountryUnited Kingdom
CityGlasgow
Period7/07/1910/07/19
Internet address

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Keywords

  • organic thin-film transistor
  • compact model
  • high transconductance
  • low operating voltage

Cite this

Al Ruzaiqi, A., Nikolov, B., Chen, L. R., & Gleskova, H. (2019). Compact modeling of organic transistors with multi-finger contacts. IEEE International Conference on Flexible and Printable Sensors and Systems , Glasgow, United Kingdom.