scholarly journals Long Channel Carbon Nanotube as an Alternative to Nanoscale Silicon Channels in Scaled MOSFETs

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Michael Loong Peng Tan
Keyword(s):  
Carbon Nanotube ◽  
Electric Field ◽  
Field Effect ◽  
Field Effect Transistor ◽  
Unit Area ◽  
Gain Control ◽  
Oxide Semiconductor ◽  
Wide Range ◽  
Effect Transistor ◽  
Long Channel

Long channel carbon nanotube transistor (CNT) can be used to overcome the high electric field effects in nanoscale length silicon channel. When maximum electric field is reduced, the gate of a field-effect transistor (FET) is able to gain control of the channel at varying drain bias. The device performance of a zigzag CNTFET with the same unit area as a nanoscale silicon metal-oxide semiconductor field-effect transistor (MOSFET) channel is assessed qualitatively. The drain characteristic of CNTFET and MOSFET device models as well as fabricated CNTFET device are explored over a wide range of drain and gate biases. The results obtained show that long channel nanotubes can significantly reduce the drain-induced barrier lowering (DIBL) effects in silicon MOSFET while sustaining the same unit area at higher current density.

Improving the accuracy of the charge-sheet model for the long-channel metal-oxide semiconductor field-effect transistor

1987 ◽  
Vol 65 (8) ◽  
pp. 995-998
Author(s):  
N. G. Tarr
Keyword(s):  
Metal Oxide ◽  
Field Effect ◽  
Field Effect Transistor ◽  
Inversion Layer ◽  
Potential Drop ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Analytic Approximation ◽  
Effect Transistor ◽  
Long Channel

It is shown that the accuracy of the charge-sheet model for the long-channel metal-oxide-semiconductor field-effect transistor can be improved by allowing for the small potential drop across the inversion layer, and by using a more accurate analytic approximation for the charge stored in the depletion region.

A Method Study on Assembly of Single-Wall Carbon Nanotube Field Effect Transistor Using Dielectrophoresis

2010 ◽  
Vol 139-141 ◽  
pp. 1550-1553 ◽  
Author(s):  
Ke Xu ◽  
Cheng Dong Wu ◽  
Xiao Jun Tian ◽  
Ying Zhang ◽  
Zai Li Dong
Keyword(s):  
Carbon Nanotube ◽  
Electric Field ◽  
Field Effect ◽  
Field Effect Transistor ◽  
Building Blocks ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
Nanoscale Electronics ◽  
Experimental Parameters ◽  
Effect Transistor

Single-wall carbon nanotubes are candidates for a number of building blocks in nanoscale electronics. With respect to the assembly of carbon nanotube field effect transistor, the dielectrophoresis technology is adopted, which assembles SWCNTs between the micro-electrodes, SWCNTs are affected by the electrophoretic force which is carried out by the related theoretical analysis in a nonuniform electric field. The driving electric field of dielectrophoresis is simulated by the comsol software. According to the simulation results, a number of the experiments are done. It turns out that the required experimental parameters of the efficient assembly of SWCNT were obtained. AFM scanning and electrical properties of SWCNTs show that the method can achieve the effective assembly of carbon nanotube field effect transistor. SWCNTs are driven in the microelectrode gap, having a good arrangement of uniform orientation and assembly results, and proportional to the arrangement density along the electrode width direction and the duration of DEP. Meanwhile, it also provides an effective method of assembly and manufacture for other one-dimensional nanomaterials assembly of nanoelectronic devices.

scholarly journals Performance Analysis Of Double-Gate Carbon-Nanotube FET And MOSFET For High Speed Integrated Circuits Design

2019 ◽  
Vol 9 (1) ◽  
pp. 3207-3210
Keyword(s):  
Carbon Nanotube ◽  
Field Effect ◽  
High Speed ◽  
Field Effect Transistor ◽  
Oxide Semiconductor ◽  
Double Gate ◽  
Current Ratio ◽  
Switching Speed ◽  
Dg Mosfet ◽  
Effect Transistor

This paper explains the detailed structure as well as performance of DG-CNTFET (Double Gate Carbon Nanotube Field Effect Transistor) and its performance is compared with the DG-MOSFET (Double Gate Metal Oxide Semiconductor Field Effect Transistor). Various parameters like I-V characteristics, ON current, OFF current and ON to OFF current ratio have been evaluated using nano-TCAD ViDES. Also, the transport description of DG-MOSFET and DG-CNTFET has been described in detail. It has been observed that DG-CNTFET has lower OFF current and higher ON current in comparison to the DG-MOSFET. The higher ON current of DG-CNTFET depicts that it requires less time to turn on the device in comparison with DG-MOSFET. Also, OFF current of the DG-CNTFET is lesser as compared to MOSFET. The DG-CNTFET’s higher ON to OFF current ratio outperforms the DG-MOSFET in term of switching speed of the device. It is proposed that CNTFET can be used as an alternative of MOSFETs for high speed Integrated Circuit (IC) design.

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