Self-Aligned Ballistic Molecular Transistors and Electrically Parallel Nanotube Arrays
Ali Javey,Jing Guo,Damon B. Farmer,Qian Wang,Erhan Yenilmez,Roy G. Gordon,Mark Lundstrom,Hongjie Dai +7 more
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TLDR
Carbon nanotube field effect transistors with structures and properties near the scaling limit with short (down to 50 nm) channels, self-aligned geometries, palladium electrodes with low contact resistance, and high-K dielectric gate insulators are realized in this article.Abstract:
Carbon nanotube field-effect transistors with structures and properties near the scaling limit with short (down to 50 nm) channels, self-aligned geometries, palladium electrodes with low contact resistance, and high-K dielectric gate insulators are realized. Electrical transport in these miniature transistors is nearly ballistic up to high biases at both room and low temperatures. Atomic-layer-deposited (ALD) high-K films interact with nanotube sidewalls via van der Waals interactions without causing weak localization at 4 K. New fundamental understanding of ballistic transport, optical phonon scattering, and potential interfacial scattering mechanisms in nanotubes is obtained. Also, parallel arrays of such molecular transistors are enabled to deliver macroscopic currents-an important milestone for future circuit applications.read more
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Journal ArticleDOI
Carbon-based electronics.
TL;DR: This work reviews the progress that has been made with carbon nanotubes and, more recently, graphene layers and nanoribbons and suggests that it could be possible to make both electronic and optoelectronic devices from the same material.
Journal ArticleDOI
Chemically functionalized carbon nanotubes.
TL;DR: In this paper, covalent modification schemes allow persistent alteration of the electronic properties of the tubes, as well as to chemically tailor their surface properties, whereby new functions can be implemented that cannot otherwise be acquired by pristine nanotubes.
Journal ArticleDOI
Current saturation in zero-bandgap, top-gated graphene field-effect transistors.
TL;DR: The first observation of saturating transistor characteristics in a graphene field-effect transistor is reported, demonstrating the feasibility of two-dimensional graphene devices for analogue and radio-frequency circuit applications without the need for bandgap engineering.
Journal ArticleDOI
MoS2 transistors with 1-nanometer gate lengths
Sujay B. Desai,Sujay B. Desai,Surabhi R. Madhvapathy,Surabhi R. Madhvapathy,Angada B. Sachid,Angada B. Sachid,Juan Pablo Llinas,Juan Pablo Llinas,Qingxiao Wang,Geun Ho Ahn,Geun Ho Ahn,Gregory Pitner,Moon J. Kim,Jeffrey Bokor,Jeffrey Bokor,Chenming Hu,H.-S. Philip Wong,Ali Javey,Ali Javey +18 more
TL;DR: Molybdenum disulfide (MoS2) transistors with a 1-nm physical gate length using a single-walled carbon nanotube as the gate electrode are demonstrated, which exhibit excellent switching characteristics with near ideal subthreshold swing of ~65 millivolts per decade and an On/Off current ratio of ~106.
Journal ArticleDOI
Synthesis and Surface Engineering of Complex Nanostructures by Atomic Layer Deposition
TL;DR: Atomic layer deposition (ALD) has become the method of choice for the semiconductor industry to conformally process extremely thin insulating layers (high-k oxides) onto large-area silicon substrates as discussed by the authors.
References
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TL;DR: In this article, preliminary concepts of conductance from transmission, S-matrix and Green's function formalism are discussed. And double-barrier tunnelling is considered.
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Ballistic carbon nanotube field-effect transistors
TL;DR: It is shown that contacting semiconducting single-walled nanotubes by palladium, a noble metal with high work function and good wetting interactions with nanotube, greatly reduces or eliminates the barriers for transport through the valence band of nanot tubes.
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Logic circuits with carbon nanotube transistors
TL;DR: This work demonstrates logic circuits with field-effect transistors based on single carbon nanotubes that exhibit a range of digital logic operations, such as an inverter, a logic NOR, a static random-access memory cell, and an ac ring oscillator.