Electronically pure single chirality semiconducting single-walled carbon nanotube for large scale electronic devices
AssigneeCarbon Nanotube Technologies, LLC
InventorHuaping Li
Life of this patent
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Abstract
An electronically pure carbon nanotube ink, includes a population of semiconducting carbon nanotubes suspended in a liquid, the ink being essentially free of metallic impurities and organic material, and characterized in that when incorporated as a carbon nanotube network in a metal/carbon nanotube network/metal double diode, a nonlinear current-bias curve is obtained on application of a potential from 0.01 V to 100 V. The ink can be used to prepare air-stable n-type thin film transistors having performances similar to current thin film transistors used in flat panel displays amorphous silicon devices and high performance p-type thin film transistors with high-κ dielectrics.
Claims25
An electronically pure carbon nanotube ink, comprising:
- a population of single-walled semiconducting carbon nanotubes suspended in a liquid, the ink being essentially free of metallic impurities and wherein the ink is characterized as being electronically pure when incorporated as a carbon nanotube network in a metal/carbon nanotube network/metal double diode, by obtaining a nonlinear current-bias curve through the application of a potential from 0.01 V to 5 V across the semiconducting carbon nanotube network diode.
An electronically pure carbon nanotube thin film, comprising:
- a population of single-walled semiconducting carbon nanotubes essentially free of metallic impurities and organic material, and wherein the film is characterized as being electronically pure when incorporated as a carbon nanotube network in a metal/carbon nanotube network/metal double diode, by obtaining a nonlinear current-bias curve through the application of a potential from 0.01 V to 5 V across the semiconducting carbon nanotube network diode.
A method of identifying an electronically pure carbon nanotube ink, comprising:
- providing a nanotube ink of interest;
- preparing a metal electrode/carbon nanotube network/metal electrode double diode, using the carbon nanotube ink of interest;
- applying a voltage from 0.01 V to 5 V across the carbon nanotube network diode;
- and
- generating a current-bias curve, wherein a non-linear curve generated by the carbon nanotube network diode is an indication of an electronically pure semiconducting carbon nanotube ink.
Dependencies are inferred from the claim text.