Graphene as a replacement for Si in nano-electronics

This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2011.

Detalles Bibliográficos
Autor Principal:	Khan, Raisa Tamanna
Outros autores:	Khan, Mumit
Formato:	Thesis
Idioma:	English
Publicado:	BRAC University 2012
Subjects:	Electrical and electronic engineering
Acceso en liña:	http://hdl.handle.net/10361/1749

id	10361-1749
record_format	dspace
spelling	10361-17492019-09-29T05:43:53Z Graphene as a replacement for Si in nano-electronics Khan, Raisa Tamanna Khan, Mumit Department of Electrical and Electronic Engineering, BRAC University Electrical and electronic engineering This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2011. Cataloged from PDF version of thesis report. Includes bibliographical references (page 27-29). In this paper, device manufacturing as a whole has been explored to discover whether graphene could be a prospective material for device fabrication or not. As a part of this exploration, the current device manufacturing process and its limitations have been examined. According to Moore’s law, the number of transistors per square inch on integrated circuits had doubled ever year since the invention of integrated circuit and is expected to continue so for future. To sustain Moore’s law in semiconductor manufacturing industry, the size of devices have to be smaller and smaller in the near future. The use of Si in device manufacturing is going through its fundamental limitations including scaling limitation and mobility issue. Research has shown that when Si is cut into very narrow ribbons or layers, the mobility decreases significantly and at the same time silicon’s characteristics vary considerably with the changes in temperature. Thus at this era of smaller and smarter devices, the researchers have started their venture of searching for an alternative for Si in nanoelectronics. If not an alternative then at least as a prospective material for future nanoelectronics, graphene has attracted the attention of many due to its superior mobility, excellent thermal conductivity, availability and low cost. Graphene being regarded as a “miracle material” has proved itself to be a probable replacement for Si in nano-scale device manufacturing as being cut into nano-meter size layers, the mobility remains high even at room temperature. An absense of a proper bandgap in graphene making it impossible to turn the conduction off in graphene device, puts graphene-based device manufacturing under scrutiny.The research does not stop here as graphene has already exhibited its other outstanding characteristics which still open up the chances for graphene’s use as an epitaxial layer on other semiconducting substrates in order to fabricate devices. Epitaxial layer on SiC/SiO2 substrates is one of these prospective methods. However the limitations given, the approach towards fabricating all-graphene devices is on its way and thus the need of engineering a bandgap in graphene arises urgently. The matter of anticipation is that some prospective methods have been proposed by a lot of researchers around the world to obtain or induce a bandgap in graphene. Some of the approaches include Scanning Tunnelling Probe Microscope (STM) lithography, using Graphene Oxide (GO) sheets to bridge the gap between two epitaxial graphene layers, opening a tunable bandgap in Bi-layer graphene by doping the substrate electrically and so on. If an entire device fabrication process can be established which include obtaining graphene samples, attaining all-graphene layers and etching processes using different effective lithographic techniques, then the day is not far away when the “graphene-dream” Raisa Tamanna Khan B. Electrical and Electronic Engineering 2012-04-04T09:09:09Z 2012-04-04T09:09:09Z 2011 2011-12 Thesis ID 09221075 http://hdl.handle.net/10361/1749 en BRAC University thesis are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. 34 pages application/pdf BRAC University
institution	Brac University
collection	Institutional Repository
language	English
topic	Electrical and electronic engineering
spellingShingle	Electrical and electronic engineering Khan, Raisa Tamanna Graphene as a replacement for Si in nano-electronics
description	This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2011.
author2	Khan, Mumit
author_facet	Khan, Mumit Khan, Raisa Tamanna
format	Thesis
author	Khan, Raisa Tamanna
author_sort	Khan, Raisa Tamanna
title	Graphene as a replacement for Si in nano-electronics
title_short	Graphene as a replacement for Si in nano-electronics
title_full	Graphene as a replacement for Si in nano-electronics
title_fullStr	Graphene as a replacement for Si in nano-electronics
title_full_unstemmed	Graphene as a replacement for Si in nano-electronics
title_sort	graphene as a replacement for si in nano-electronics
publisher	BRAC University
publishDate	2012
url	http://hdl.handle.net/10361/1749
work_keys_str_mv	AT khanraisatamanna grapheneasareplacementforsiinnanoelectronics
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Graphene as a replacement for Si in nano-electronics

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