Open Access Open Access  Restricted Access Subscription or Fee Access

Circuit-Level Model of Dual-Gate Bi-Layer and Multi-Layer Graphene Fet

R. Revathi, Mohan Kumar

Abstract


This paper presents Circuit level model of a dual gate bilayer and four layers GFET. This model accurately estimates the conductance at the charge neutrality point (CNP).  At the CNP, the device has its maximum resistance, (i) Validates the device off-current for a range of Electric field perpendicular to channel (ii) Estimates the amount of bandgap opening created by application of Electric field using the general Schottky equation. (iii) Validates the channel output conductance against varying gate voltage for both a bilayer and four layer graphene channels.


Full Text:

PDF

References


Ime J. Umoh, Student Member, IEEE, Tom J. Kazmierski, Senior Member, IEEE, and Bashir Al-Hashimi, Fellow Member, IEEE. Multi-layer graphene FET compact circuit-level model with temperature effects.

Umoh, T. Kazmierski, and B. Al-Hashimi, “A dual-gate graphene fet model for circuit simulation - spice implementation,” Nanotechnology, IEEE Transactions on, vol. 12, no. 3, pp. 427–435, 2013.

S. Frgonse, N. Meng, H.-N. Nguyen, C. Majek, C. Maneux, H. Happy, and T. Zimmer, “Electrical compact modelling of graphene transistors,” Solid-State Electronics, vol. 73, no. 0, pp.27–31, 2012. [Online].Available: http://www.sciencedirect.com/science/article/pii/S0038110112000226

Jimenez and O. Moldovan, “Explicit drain-current model of grapheme field-effect transistors targeting analog and radio-frequency applications,” Electron Devices, IEEE Transactions on, vol. 58, no. 11, pp. 4049–4052, 2011.

Meric, C. Dean, S.-J. Han, L. Wang, K. Jenkins, J. Hone, and K. Shepard, “High-frequency performance of graphene field effect transistors with saturating iv-characteristics,” in Electron Devices Meeting (IEDM), 2011 IEEE International, 2011, pp. 2.1.1–2.1.4.

S. A. Thiele, J. A. Schaefer, and F. Schwierz, “Modeling of grapheme metal-oxide-semiconductor field-effect transistors with gapless largearea graphene channels,” Journal of Applied Physics, vol. 107, no. 9, pp. 094 505–(1–8), 2010.

Y.-M. Lin, H.-Y. Chiu, K. Jenkins, D. Farmer, P. Avouris, and A. Valdes- Garcia, “Dual-gate graphene fets with ft of 50 ghz,” Electron Device Letters, IEEE, vol. 31, no. 1, pp. 68 –70, January 2010.

Y.-M. Lin, C. Dimitrakopoulos, K. A. Jenkins, D. B. Farmer, H.-Y. Chiu, A. Grill, and P. Avouris, “100-ghz transistors from wafer-scale epitaxial graphene,” Science, vol. 327, no. 5966, p. 662, 2010. [Online]. Available: http://www.sciencemag.org/content/327/5966/662.abstract

L. Liao, Y.-C. Lin, M. Bao, R. Cheng, J. Bai, Y. Liu, Y. Qu, K. L. Wang, Y. Huang, and X. Duan, “High-speed graphene transistors with a self-aligned nanowire gate,” Nature, vol. 467, no. 7313, p. 305 308, 2010.

F. Xia, D. B. Farmer, Y.-m. Lin, and P. Avouris, “Graphene field-effect transistors with high on/off current ratio and large transport band gap at room temperature,” Nano Letters, vol. 10, no. 2, pp. 715–718, 2010.

Y. Zhang, T.-T. Tang, C. Girit, Z. Hao, M. C. Martin, A. Zettl, M. F. Crommie, Y. R. Shen, and F. Wang, “Direct observation of a widely tunable bandgap in bilayer graphene,” Nature, vol. 459, no. 7248, pp. 820–823, Jun 2009.

J. Kedzierski, P.-L. Hsu, A. Reina, J. Kong, P. Healey, P. Wyatt, and C. Keast, “Graphene-on-insulator transistors made using c on ni chemical-vapor deposition,” Electron Device Letters, IEEE, vol. 30, no. 7, pp. 745 –747, July 2009.

Meric, N. Baklitskaya, P. Kim, and K. L. Shepard, “Rf performance of top-gated, zero-bandgap graphene field-effect transistors,” in Electron Devices Meeting, 2008. IEDM 2008. IEEE International, 2008, pp. 1–4.

Meric, M. Y. Han, A. F. Young, B. Ozyilmaz, P. Kim, and K. L. Shepard, “Current saturation in zero-bandgap, top-gated graphene fieldeffect transistors,” Nat Nano, vol. 3, pp. 654 – 659, November 2008.

J. B. Oostinga, H. B. Heersche, X. Liu, A. F. Morpurgo, and L. M. K. Vandersypen, “Gate-induced insulating state in bilayer graphene devices,” Nat Mater, vol. 7, no. 2, p. 151157, Feb 2008.


Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.