Please use this identifier to cite or link to this item: https://doi.org/10.1098/rsta.2008.0262
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dc.titleTristable electrical conductivity switching in a polyfluorene- diphenylpyridine copolymer with pendant carbazole groups
dc.contributor.authorLiu, G.
dc.contributor.authorLiaw, D.-J.
dc.contributor.authorLee, W.-Y.
dc.contributor.authorLing, Q.-D.
dc.contributor.authorZhu, C.-X.
dc.contributor.authorChan, D.S.-H.
dc.contributor.authorKang, E.-T.
dc.contributor.authorNeoh, K.-G.
dc.date.accessioned2014-04-24T07:25:27Z
dc.date.available2014-04-24T07:25:27Z
dc.date.issued2009-10-28
dc.identifier.citationLiu, G., Liaw, D.-J., Lee, W.-Y., Ling, Q.-D., Zhu, C.-X., Chan, D.S.-H., Kang, E.-T., Neoh, K.-G. (2009-10-28). Tristable electrical conductivity switching in a polyfluorene- diphenylpyridine copolymer with pendant carbazole groups. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 367 (1905) : 4203-4214. ScholarBank@NUS Repository. https://doi.org/10.1098/rsta.2008.0262
dc.identifier.issn1364503X
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/51063
dc.description.abstractTristable electrical conductivity switching and non-volatile memory effects are demonstrated in a conjugated copolymer of poly(2,6-diphenyl-4-((9-ethyl)- 9H- carbazole)-pyridinyl-alt-2,7-(9,9-didodecyl)-9H-fluorenyl) (PPCzPF). The indium-tin oxide (ITO)/PPCzPF/Al device can be switched from the low-conductivity (off) state to the first high-conductivity (on-1) state at 1.8V, with an on/off current ratio of approximately 100. The device can be further switched from the on-1 state to the next higher conductivity (on-2) state at 2.4V, with an on-2/on-l current ratio of approximately 20. All the three conductivity states are accessible, stable and nonerasable. The tri-level conductance switching can be explained in terms of field-induced conformational ordering of the polymer chains and enhanced charge-transfer interaction at the PPCzPF/ITO interface. © 2009 The Royal Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1098/rsta.2008.0262
dc.sourceScopus
dc.subjectCharge transfer
dc.subjectConformational ordering
dc.subjectConjugated copolymer
dc.subjectTristable switching
dc.typeArticle
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.contributor.departmentCHEMICAL & BIOMOLECULAR ENGINEERING
dc.contributor.departmentSINGAPORE-MIT ALLIANCE
dc.description.doi10.1098/rsta.2008.0262
dc.description.sourcetitlePhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
dc.description.volume367
dc.description.issue1905
dc.description.page4203-4214
dc.identifier.isiut000269983600006
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