Journal
ELECTRONICS
Volume 12, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/electronics12102195
Keywords
thin film transistor; Corbino; drain offset; high voltage; model
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In this study, equations were derived to describe the current-voltage relations of offset Corbino thin film transistors. The influence of offset position and parameters on saturation voltage and current was quantitatively described. The theoretical physical model was verified through computer-aided design simulation and experimental results.
Offset Corbino thin film transistor is a good candidate for high voltage thin film transistor (HVTFT) due to the uniform drain electric field distribution benefiting from the circular structure. The physical model of offset Corbino thin film transistor characteristics has yet to be clarified. In this study, Equations are derived to describe the current-voltage relations of Corbino TFT with offset at the drain or source sides. The influence of offset position and parameters on the saturation voltage and the saturation current was described quantitatively. Three-dimensional Computer-Aided Design simulation and experiment results verify the theoretical physical model. Our physical model provides design rules for high voltage offset Corbino TFT when considering the voltage tolerance and saturation current balance.
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