Abstract
While much numerical studies have been done on short channel carbon nanotube field effect transistors (CNT-FETs), there are only a few numerical reports on long channel devices. Long channel CNT-FETs have been widely used in chemical sensors and biosensors as well as light emitters. Therefore, numerical study is helpful for a better understanding of the behavior of such devices. In this paper, we numerically analyze long-channel CNT-FETs by solving the continuity and charge equations self-consistently. To increase the accuracy of simulation, filed-dependent mobility is applied to the equations. Furthermore, a method is proposed to obtain the electrical current of transistors as a function of CNT diameter. Obtained results are in good agreement with the previous experimental data. It is found that compared to a CNT-based resistor, the dependence of current on diameter is much higher in a CNT-FET. Finally, reproducibility of transistors based on the arrays of random CNTs of 1-2 nm diameter in terms of the CNTs number is also investigated.
Publisher
Trans Tech Publications, Ltd.
Reference24 articles.
1. S. Iijima, Helical microtubules of graphitic carbon. Nature 354 (1991) 56-58.
2. P. Sagar Babu, B.K. Madhavi, K. Lal Kishore, A Survey on Alternative to MOS Device Structures beyond 32nm Technology,, International Journal of VLSI and Embedded Systems-IJVES 05 (2014).
3. S. Datta, H. Liu, V. Narayanan, Tunnel FET technology: A reliability perspective,, Microelectronics Reliability, 54 (2014) 861-874.
4. T.E. Ayoob Khan, S. Reji T.A. Shahul Hameed, Leakage Suppression Approaches in Bulk FinFETs,, Materialstoday: proceedings, 11 (2019) 1054-1060.
5. Z. Ramezani, A.A. Orouji, Investigation of vertical graded channel doping in nanoscale fully-depleted SOI-MOSFET,, Superlattices and Microstructures, 98 (2016) 359-370.
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3 articles.
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