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GRAPHENE AND CARBON NANOTUBES: SYNTHESIS, CHARACTERIZATION
AND APPLICATIONS FOR BEYOND SILICON ELECTRONICS
by
Lewis Mortimer Gomez De Arco
A Dissertation Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
DOCTOR OF PHILOSOPHY
(CHEMISTRY)
December 2010
Copyright 2010 Lewis Mortimer Gomez De Arco
Object Description
| Title | Graphene and carbon nanotubes: synthesis, characterization and applications for beyond silicon electronics |
| Author | Gomez De Arco, Lewis Mortimer |
| Author email | gomezdea@usc.edu; lmortimerg@gmail.com |
| Degree | Doctor of Philosophy |
| Document type | Dissertation |
| Degree program | Chemistry |
| School | College of Letters, Arts and Sciences |
| Date defended/completed | 2010-08-31 |
| Date submitted | 2010 |
| Restricted until | Unrestricted |
| Date published | 2010-09-13 |
| Advisor (committee chair) | Zhou, Chongwu |
| Advisor (committee member) |
Thompson, Mark Gundersen, Martin |
| Abstract | Graphene and carbon nanotubes have outstanding electrical and thermal conductivity. These characteristics make them exciting materials with high potential to replace silicon and surpass its performance in the next generation of semiconductors devices, such devices ought to be considerably smaller and faster than the ones used in present technology. Despite of the excellent electrical and thermal conduction properties of graphene and carbon nanotubes, the advance of nanoelectronics based on them has been hampered due to fundamental limitations of the current synthesis and integration technologies of these carbon nanomaterials. Therefore, there is a strong need to do research at fundamental and applicative levels to help find the roadmap that these materials need to follow, in order to become a real alternative for silicon in future technologies.; This dissertation present our approach to overcome some of the most critical problems that hinder the implementation of graphene and carbon nanotubes as important components in real-life macro and nanoelectronic devices. Towards this end, we systematically studied synthesis methods for scalable, high quality graphene and evaluated our large-scale synthesized graphene as transparent electrodes in functional energy conversion devices. In addition, we explored scalable methods to obtain carbon nanotube field-effect transistors with only semiconductor nanotube channels and studied the substrate influence on the structure and metal to semiconductor ratio of aligned nanotubes. Although we have successfully tackled some of the most important challenges of the above-mentioned one- and two-dimensional carbon nanostructures, more remains to be done to integrate them as functional components in electronic devices to reach the goal of transferring them from the laboratory to the manufacturing industry, and ultimately to the society.; In chapter 1, a general introduction to carbon nanomaterials is presented, followed by a more focused discussion on the structure and properties of graphene and carbon nanotubes. Chapter 2, presents the development of a chemical vapor deposition method for scalable graphene synthesis and the evaluation of its electrical properties as the active channel in field effect transistor and as a transparent conductor. Chapter 3 presents further work on graphene synthesis on single crystal nickel and the influence of the substrate atomic arrangement on the synthesized graphene. Chapter 4 presents the implementation of the highly scalable graphene synthesized by CVD as the transparent electrode in flexible organic photovoltaic cells. Chapter 5 evaluates the influence of substrate/nanotube interactions during align nanotube growth on the Raman signature of the resulting aligned nanotubes, nanotube structure and metal to semiconductor ratio. Chapter 6 presents our findings on a scalable method that can be used at wafer scale to achieve metal to semiconductor conversion of carbon nanotubes by light irradiation and its application to achieve semiconducting CNTFETs. Finally, in chapter 7, future research directions in related areas of science and technology are proposed. |
| Keyword | graphene; carbon nanotubes; graphene synthesis; carbon nanotube synthesis; electronic properties of graphene; electronic properties of carbon nanotubes; graphene transparent conductive films; semiconducting carbon nanotubes; graphene field efect transistors; carbon nanotube field effect transistors; resonant raman spectroscopy; raman of carbon nanotubes; raman of graphene |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m3433 |
| Rights | Gomez De Arco, Lewis Mortimer |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Arco-4103 |
| Archival file | uscthesesreloadpub_Volume32/etd-Arco-4103.pdf |
Description
| Title | Page 1 |
| Full text | GRAPHENE AND CARBON NANOTUBES: SYNTHESIS, CHARACTERIZATION AND APPLICATIONS FOR BEYOND SILICON ELECTRONICS by Lewis Mortimer Gomez De Arco A Dissertation Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY (CHEMISTRY) December 2010 Copyright 2010 Lewis Mortimer Gomez De Arco |
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