Fundamental and Applied Aspects of Electronics Based on Single -Walled Carbon Nanotube Thin Films
Cao, Qing
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Permalink
https://hdl.handle.net/2142/84333
Description
Title
Fundamental and Applied Aspects of Electronics Based on Single -Walled Carbon Nanotube Thin Films
Author(s)
Cao, Qing
Issue Date
2009
Doctoral Committee Chair(s)
Rogers, John A.
Department of Study
Chemistry
Discipline
Chemistry
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Chemistry, General
Language
eng
Abstract
To improve the performances of SWNT thin film transistors (TFTs), we adopted high capacitance gate dielectrics to reduce the device operation voltage from ∼20 V to ∼1 V and, in related work, the hysteresis has been reduced from levels so large that the transistors could be used effectively as memory devices to values that are nearly negligible. Not only p-channel but also and n-channel and ambipolar devices have been achieved by use of simple polymer coating strategies. Complex digital circuits composed of nearly 100 SWNT TFTs have also been successfully demonstrated. Finally, we demonstrated certain classes of optically transparent devices using SWNT films as electrically active material. These results represent important steps in the development of an SWNT based electronics technology that could find utility in areas such as flexible electronics and others that might complement the capabilities of established systems.
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