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Permanent link (DOI): https://doi.org/10.7939/R3JH34

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In-Situ Spectroscopic Characterization of Operating Polythiophene Nonvolatile Memory Devices Open Access

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Other title
Subject/Keyword
In-Situ Spectroscopic Characterization
Nonvolatile Memory
Polythiophene
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Chen, Xiangyu
Supervisor and department
McCreery, Richard (Chemistry)
Examining committee member and department
Petersen, Nils (Chemistry)
Shankar, Karthik (Electrical and Computer Engineering)
Department
Department of Chemistry
Specialization

Date accepted
2013-12-29T21:49:29Z
Graduation date
2014-06
Degree
Master of Science
Degree level
Master's
Abstract
Au/P3HT/PEO-EV(ClO4)2/C/Au nonvolatile memory devices were developed based on resistive switch of conducting polymers in the solid state. The P3HT layer was switched using a “write/erase” bias, while internal composition of the device was monitored using in-situ UV-Vis absorbance spectrometer coupled with electronic measurement system. Optical absorption and conductivity changes revealed reversible transition between P3HT neutral and polaron forms, which had different conductance and absorbance at OFF and ON states of the memory device. The results demonstrated the redox reaction in solid state devices, and directly correlate absorption and device conductivity. Finally, a polaron propagation mechanism was proposed and confirmed using a simplified dual pulse experiment setup. The reported results provide an understanding of the mechanism in nonvolatile polymer memory devices, which can be used to improve the memory performance and evaluate possible commercial applications.
Language
English
DOI
doi:10.7939/R3JH34
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.
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