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Title: Polymer Electronic Memories: Materials, Devices & Mechanisms
Keywords: Polymer memory, resistive switching, conformation change, charge transfer, charge trapping, nanocomposites
Issue Date: 17-Feb-2009
Citation: LIM SIEW LAY (2009-02-17). Polymer Electronic Memories: Materials, Devices & Mechanisms. ScholarBank@NUS Repository.
Abstract: In an effort to provide alternatives to conventional semiconductor memories, four different polymer systems were successfully applied for the fabrication of polymer electronic memory devices based on resistive switching. The materials studied included non-conjugated polymers with pendant carbazole groups, a non-conjugated copolymer with electron-donors and -acceptors as pendant groups, non-conjugated polymers containing pendant azobenzene chromophores in donor-acceptor structures, and nanocomposites of polyaniline and carbon nanotubes. The systems operated based on mechanisms of conformation change, charge transfer, charge-trapping and b detrapping, and nanocomposite charge transfer effects, respectively. The electrically bistable polymer electronic devices can function as rewritable flash memory, and non-rewritable write-once-read-many-times (WORM) and, in some cases, volatile memories. A multilevel memory was also obtained. The performance of the polymer memory device based on conformation change was improved via architectural modifications of the polymer layer. The results obtained in this project are useful for alternative data storage in future information technology.
Appears in Collections:Ph.D Theses (Open)

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