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High-Frequency Performance of Submicrometer Transistors That Use Aligned Arrays of Single-Walled Carbon Nanotubes

Journal Article · · Nano Letters
DOI:https://doi.org/10.1021/nl9001074· OSTI ID:1875464
 [1];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2]
  1. Univ. of Illinois at Urbana-Champaign, IL (United States); Northrop Grumman Electronics Systems, Linthicum, MD (United States); Lehigh Univ., Bethlehem, PA (United States); University of Illinois
  2. Univ. of Illinois at Urbana-Champaign, IL (United States); Northrop Grumman Electronics Systems, Linthicum, MD (United States); Lehigh Univ., Bethlehem, PA (United States)
The unique electronic properties of single-walled carbon nanotubes (SWNTs) make them promising candidates for next generation electronics, particularly in systems that demand high frequency (e.g., radio frequency, RF) operation. Transistors that incorporate perfectly aligned, parallel arrays of SWNTs avoid the practical limitations of devices that use individual tubes, and they also enable comprehensive experimental and theoretical evaluation of the intrinsic properties. Thus, devices consisting of arrays represent a practical route to use of SWNTs for RF devices and circuits. The results presented here reveal many aspects of device operation in such array layouts, including full compatibility with conventional small signal models of RF response. Submicrometer channel length devices show unity current gain (ft) and unity power gain frequencies (fmax) as high as ~5 and ~9 GHz, respectively, with measured scattering parameters (S-parameters) that agree quantitatively with calculation. The small signal models of the devices provide the essential intrinsic parameters: saturation velocities of 1.2 × 107 cm/s and intrinsic values of ft of ~30 GHz for a gate length of 700 nm, increasing with decreasing length. Here, the results provide clear insights into the challenges and opportunities of SWNT arrays for applications in RF electronics.
Research Organization:
Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Organization:
National Science Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
Grant/Contract Number:
FG02-07ER46453; FG02-07ER46471
OSTI ID:
1875464
Journal Information:
Nano Letters, Journal Name: Nano Letters Journal Issue: 5 Vol. 9; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (16)

Tailored Assembly of Carbon Nanotubes and Graphene journal March 2011
Aligned, Ultralong Single-Walled Carbon Nanotubes: From Synthesis, Sorting, to Electronic Devices journal March 2010
Optoelectronic Properties of Single-Wall Carbon Nanotubes journal August 2012
Directed and On-Demand Alignment of Carbon Nanotube: A Review toward 3D Printing of Electronics journal January 2019
CVD-Grown Horizontally Aligned Single-Walled Carbon Nanotubes: Synthesis Routes and Growth Mechanisms journal May 2012
High-Performance Partially Aligned Semiconductive Single-Walled Carbon Nanotube Transistors Achieved with a Parallel Technique journal February 2013
Review of Electronics Based on Single-Walled Carbon Nanotubes journal August 2017
Nanotube electronics for radiofrequency applications journal November 2009
Wafer-scalable, aligned carbon nanotube transistors operating at frequencies of over 100 GHz journal November 2019
Carbon nanomaterials for electronics, optoelectronics, photovoltaics, and sensing journal January 2013
Aligned carbon nanotubes: from controlled synthesis to electronic applications journal January 2013
A review of fabrication and applications of carbon nanotube film-based flexible electronics journal January 2013
Horizontally aligned carbon nanotube arrays: growth mechanism, controlled synthesis, characterization, properties and applications journal January 2017
Review of carbon nanotube nanoelectronics and macroelectronics journal May 2014
A Review of Carbon Nanotube Ensembles as Flexible Electronics and Advanced Packaging Materials journal June 2011
Terahertz Science and Technology of Carbon Nanomaterials text January 2013

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