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Permanent link (DOI): https://doi.org/10.7939/R3XK84Z67

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Highly Ordered Methanofullerene Nanotube Array: Fabrication and Implications for Room Temperature Organic Spintronics Open Access

Descriptions

Other title
Subject/Keyword
Magnetoresistance
AAO
OMAR
PCBM
Nanowire
Organic Electronics
Spintronics
Nanotube
Spin Valve
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Starko-Bowes, Ryan C. K.
Supervisor and department
Dr. Sandipan Pramanik (Electrical and Computer Engineering)
Examining committee member and department
Dr. Zubin Jacob (Electrical and Computer Engineering)
Dr. Mani Vaidyanathan (Electrical and Computer Engineering)
Department
Department of Electrical and Computer Engineering
Specialization
Solid State Electronics
Date accepted
2013-09-13T14:43:16Z
Graduation date
2013-11
Degree
Master of Science
Degree level
Master's
Abstract
Organic semiconductors have come to the forefront of research in physics, chemistry and electronics due to their impressive properties and low cost of device production. Presented here is a novel centrifuge assisted organic nanowire growth technique and its application in the fabrication of methanofullerene ([6,6]-phenyl-C61-butyric acid methyl ester (PCBM) nanotube array spin valves. This growth technique enables the fabrication of a wide range of potential organic nanowire devices for applications in photonics, optoelectronics and spintronics. In particular, spin valves of PCBM nanotube arrays fabricated using this technique demonstrate encouraging spin transport properties. In spite of a long channel length (~325 nm), these devices exhibit an inverse spin valve effect which persists even at room temperature. The spin relaxation length in these devices is estimated to be ~50 nm at room temperature which is the largest room temperature spin relaxation length in organic nanowire systems reported to date, including carbon nanotubes.
Language
English
DOI
doi:10.7939/R3XK84Z67
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
Citation for previous publication
K. M. Alam, A. P. Singh, R. Starko-Bowes, S. C. Bodepudi, and S. Pramanik, “Template-Assisted Synthesis of π-Conjugated Molecular Organic Nanowires in the Sub-100 nm Regime and Device Implications,” Adv. Funct. Mater., vol. 22, no. 15, pp. 3298–3306, 2012.R. Starko-Bowes and S. Pramanik, “Ultrahigh Density Array of Vertically Aligned Small-molecular Organic Nanowires on Arbitrary Substrates,” J. Vis. Exp., no. 76, Jun. 2013.R. Starko-Bowes, S. C. Bodepudi, K. M. Alam, A. P. Singh, and S. Pramanik, “Room temperature spin valve effect in highly ordered array of methanofullerene nanotubes,” J. Appl. Phys., vol. 114, no. 4, pp. 044316–044316–9, Jul. 2013.

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