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Sushil Kumar Jain,Amit Mahesh Joshi 한국전기전자재료학회 2024 Transactions on Electrical and Electronic Material Vol.25 No.1
In this work, a comprehensive performance evaluation of a temperature sensor utilizing an organic thin-fi lm transistor (OTFT) with hybrid bilayer dielectric layer polyvinyl alcohol (PVA)/high K inorganic dielectrics is presented. The temperature sensor elucidates the temperature-dependent characteristics of organic thin-film transistors (OTFTs) employing various bilayer dielectrics. It specifically describes the alterations in the drain current of these transistors with temperature. This inherent property of OTFTs makes them highly suitable for accurate and reliable temperature-sensing applications. Electrical parameters of the OTFT devices are determined at diff erent temperatures (300 K and 350 K) which include subthreshold swing ( SS ), off current ( Ioff ), current on-off ratio ( Ion / Ioff ), and on-current ( Ion ). OTFT characteristics vary at two different temperatures, highlighting their potential use as temperature sensors. The temperature sensor shows its highest sensitivity, reaching 149.10% for PVA/(S rZrO3 ) bilayer dielectric at V DS = -10V .