Three stage ring oscillator with organic transistors

A.G. Bonea, Tomi Hassinen, P. Svasta

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    1 Citation (Scopus)


    The paper aims to address the issues of circuit integration of organic thin film transistors (OTFT) into a ring oscillator module. The stress falls on the optimization of the connections of the inverters in each of the stages of the presented three-stage ring oscillators. The organic transistors, with Bottom Contact Top Gate architecture, are fabricated using commercially available materials and accessible deposition techniques, such as spin-coating and metal evaporation. Two ring oscillators are fabricated with manual and patterned interconnections. The first circuit has a widthlength ratio of 1:10 between the load and drive transistors, while the second structure has a 1:30 ratio. The current-voltage measurements on the individual transistors, as well as the electrical measurements onto inverters and onto the whole circuit, are performed with a Keithley 4200 Semiconductor Analyzer. All measurements are done in accordance with the 1620.1 standard, in air and under normal ceiling fluorescent light illumination. The stability of the individual devices and the overall circuit is proved to remain constant under normal working conditions. © (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
    Original languageEnglish
    Title of host publicationAdvanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VI
    EditorsPaul Schiopu
    PublisherInternational Society for Optics and Photonics SPIE
    Number of pages6
    ISBN (Print)978-0-8194-9089-6
    Publication statusPublished - 2012
    MoE publication typeA4 Article in a conference publication
    EventAdvanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VI - Constanta, Romania
    Duration: 23 Aug 201226 Aug 2012

    Publication series

    SeriesProceedings of SPIE


    ConferenceAdvanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies VI


    • organic thin film transistor
    • ring oscillator


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