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Journal articles
Electrografted Fluorinated Organic Ultrathin Film as Efficient Gate Dielectric in MoS 2 Transistors
Abstract : Dielectric films with nanometer thickness play a central role in the performances of field effect transistors (FETs). In this article, a new class of organic gate dielectric based on the electrochemical grafting of diazonium salts on metallic electrodes is investigated. The versatile diazonium salt strategy is a local and room-temperature process that provides robustness and performances. Moreover, this process produces ultrathin (4−8 nm) and smooth films. To prove their efficiency as gate dielectric, they were integrated in MoS 2 −FETs gate stacks. The devices display excellent switching behavior for reduced gate bias swing (down to 1 V) and suppressed hysteresis thanks to the highly hydrophobic nature of the fluorinated grafted film. Furthermore, the devices exhibit steep subthreshold slopes (as low as 110 mV/decade), demonstrating excellent gate coupling.
https://hal-cea.archives-ouvertes.fr/cea-01332017
Contributor : Serge Palacin <>
Submitted on : Wednesday, June 15, 2016 - 10:26:27 AM
Last modification on : Monday, February 10, 2020 - 6:13:58 PM
Contributor : Serge Palacin <>
Submitted on : Wednesday, June 15, 2016 - 10:26:27 AM
Last modification on : Monday, February 10, 2020 - 6:13:58 PM