The Influence of Diketopyrrolopyrrole Chemical Structure on Organic Field-Effect Transistors Performance

Abstract:

Organic semiconductors are suitable for application in biosensors and sensors based on transistors. The influence of soluble group modifications on the performance of diketopyrrolopyrrole-based organic field-effect transistors (OFETs) is studied. The lowest mobility 1·10^-9 cm²/Vs was observed for non-symmetric substitution O,N. Measurable charge carrier mobility was observed due to reduction of the density charge trapping states after application of organosilane self-assembled monolayers (SAMs) on thinner gate-dielectrics (90 nm). We report similar drift mobility 1·10^-7 cm²/Vs for smallest soluble group “butyl” as for biggest group “EthylAdamantyl” in N,N and O,O substitution prepared by spin-coating.

• Periodical: Materials Science Forum (Volume 851)
• Pages: 189-193
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.851.189
• Online since: April 2016
• Authors: Stanislav Stříteský*, Jozef Krajčovič, Martin Vala, Martin Weiter
• Keywords: Charge Carrier Mobility, Diketopyrrolopyrrole, OFET, Organic Electronics

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