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Exploration of a Cellulose Based Biocompatible Gate Dielectric for Low Voltage Organic Transistors

In this work, a cellulose-based biocompatible high-k dielectric cyanoethyl cellulose (CEC) is comprehensively explored for demonstration of low-voltage organic transistors. The organic field-effect transistor (OFET) devices fabricated using a blend of TIPS-Pentacene and polystyrene to create the act...

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Bibliographic Details
Published in:IEEE journal on flexible electronics 2023-09, Vol.2 (5), p.1-1
Main Authors: Konwar, Gargi, Rahi, Sachin, Tiwari, Shree Prakash
Format: Article
Language:English
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Summary:In this work, a cellulose-based biocompatible high-k dielectric cyanoethyl cellulose (CEC) is comprehensively explored for demonstration of low-voltage organic transistors. The organic field-effect transistor (OFET) devices fabricated using a blend of TIPS-Pentacene and polystyrene to create the active semiconductor layer exhibited excellent p-channel transistor behavior with maximum and average process transconductance values of ~ 9.0, and ~ 6.0 nF/V.s respectively, I on / I off of 10 3 , and average threshold voltage of -0.4 (±0.1) V suitable for sub-5V operation. Moreover, very high electrical stability was achieved from these devices through bias-stress, and repeatability measurements. The device operation was still maintained after 6 months in normal ambient indicating a high shelf life. Finally, there was a minimal variation in performance upon annealing the devices up to 60 °C, indicating high reliability in harsh environmental operating conditions. Our results confirm that CEC can be a potential gate dielectric for organic and biodegradable electronics which is essential for sustainability.
ISSN:2768-167X
2768-167X
DOI:10.1109/JFLEX.2023.3266414