Model of Tunneling Current on Bilayer Armchair Graphene Nanoribbon Tunnel Field Effect Transistor Using Transfer Matrix Method
| Authors | E. Suhendi, M.F. Fadhillah, I. Anjaningsih, S.D. Ulhaq, A. Fadhillah, D. Rusdiana |
| Affiliations |
Program Studi Fisika, Universitas Pendidikan Indonesia, Bandung, Indonesia |
| Е-mail | endis@upi.edu |
| Issue | Volume 12, Year 2020, Number 3 |
| Dates | Received 27 September 2019; revised manuscript received 15 June 2020; published online 25 June 2020 |
| Citation | E. Suhendi, M.F. Fadhillah, I. Anjaningsih, et al., J. Nano- Electron. Phys. 12 No 3, 03036 (2020) |
| DOI | https://doi.org/10.21272/jnep.12(3).03036 |
| PACS Number(s) | 81.05.Zх, 85.30.Tv |
| Keywords | Tunneling current, Tunnel field effect transistor, BAGNR, MMT, Cut-off frequency. |
| Annotation |
A tunneling current in bilayer armchair graphene nanoribbon (BAGNR) based tunnel field-effect transistors is modeled by semi-numeric methods. Potential profiles of field-effect transistors are divided into several segments by numerical methods. The Transfer Matrix Method (TMM) is a numerical method used in calculating electron transmittance values. The TMM method was applied to get the electron transmittance values, then the Landauer formula with the Gauss Legendre Quadrature (GLQ) method was applied to generate the tunneling current from TFETs. The tunneling current is calculated by changing a number of variables, namely gate voltage (VG), drainage voltage (VD), temperature, N index, the thickness of the oxide layer and device length. In this study, the calculation of the cut-off frequency on the tunneling field-effect transistor was also carried out. The results of the tunneling current calculation show that the greater value of VG can affect the saturation current. The results of the tunneling current calculation show that the higher the temperature, the lower the tunneling current value. The calculation of the tunneling current also shows that the wider the BAGNR, the greater the tunneling current. This is due to the influence of BAGNR width which makes the energy gap (Eg) lower. The value of the cut-off frequency on the BAGNR tunnel field-effect transistor recorded in this study is 3.96-8.9 THz. |
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