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Morphological impact of insulator on inkjet-printed transistor

Abstract : This study reports on the impact of electrodes (source and drain) and insulator cross-sectional profile on the electrical behavior of printed organic field effect transistors (OFET). Varying processing technique from classical lithography to inkjet printing shows different cross-sectional profile. Indeed, due to coffee stain effect (usually considered as a drawback), inkjet-printed insulator shows wave-shaped profile although spin-coated one is perfectly smooth. However, OFET electrical behavior is not drastically impacted by insulator cross-sectional profile. Moreover, this study clearly demonstrates that independently of insulator cross sectional profile, OFET fabricated with printed-electrodes shows the worst electrical characteristics. Consequently, this work clearly demonstrates that a challenging issue for the fabrication of efficient fully-printed OFET relies on drain and source optimization (morphology or material for instance).
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01622463
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Submitted on : Tuesday, October 24, 2017 - 2:10:22 PM
Last modification on : Wednesday, October 14, 2020 - 3:53:37 AM
Long-term archiving on: : Thursday, January 25, 2018 - 12:54:24 PM

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Sjeung Moon, Malo Robin, Kuai Wenlin, Molard Yann, Byung Seong Bae, et al.. Morphological impact of insulator on inkjet-printed transistor. Flexible and Printed Electronics, IOP Science, 2017, 2 (3), pp.035008. ⟨10.1088/2058-8585/aa8760⟩. ⟨hal-01622463⟩

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