alexa Effects of gate insulator thickness and diameter over
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
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Research Article

Effects of gate insulator thickness and diameter over on/off current ratio in ballistic CNTFETs

Safayat-Al Imam
Lecturer, Dept. of EEE, Ahsanullah University of Science and Technology, Dhaka, Bangladesh
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Abstract

This paper deals with the changes of the gate insulator thickness and diameter of the nano tube on the carbon nano tube field effect transistor (CNTFET). With a large CNT diameter and thinner gate oxide enhanced onstate current can be profound. On the other hand, the off-state current improves in CNTFETs with thinner gate oxide. Also the simulation results show that the variance of insulator thickness on the threshold voltage, has no effect on the off-state current. In this way an optimum values of gate insulator thickness and diameter of the nano tube are identified to offer highest on/off current ratio of the device.

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