Please use this identifier to cite or link to this item: https://doi.org/10.1038/nmat1806
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dc.titleControlled insulator-to-metal transformation in printable polymer composites with nanometal clusters
dc.contributor.authorSivaramakrishnan, S.
dc.contributor.authorChia, P.-J.
dc.contributor.authorYeo, Y.-C.
dc.contributor.authorChua, L.-L.
dc.contributor.authorHo, P.K.-H.
dc.date.accessioned2014-06-17T02:42:52Z
dc.date.available2014-06-17T02:42:52Z
dc.date.issued2007-02
dc.identifier.citationSivaramakrishnan, S., Chia, P.-J., Yeo, Y.-C., Chua, L.-L., Ho, P.K.-H. (2007-02). Controlled insulator-to-metal transformation in printable polymer composites with nanometal clusters. Nature Materials 6 (2) : 149-155. ScholarBank@NUS Repository. https://doi.org/10.1038/nmat1806
dc.identifier.issn14761122
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/55421
dc.description.abstractAlthough organic semiconductors have received the most attention, the development of compatible passive elements, such as interconnects and electrodes, is also central to plastic electronics. For this, ligand-protected metal-cluster films have been shown to anneal at low temperatures below 250C to highly conductive metal films, but they suffer from cracking and inadequate substrate adhesion. Here, we report printable metal-cluster-polymer nanocomposites that anneal to a controlled-percolation nanostructure without complete sintering of the metal clusters. This overcomes the previous challenges while still retaining the desired low transformation temperatures. Highly water- and alcohol-soluble gold clusters (75mgml1) were synthesized and homogeneously dispersed into poly(3,4-ethylenedioxythiophene) to give a material with annealed d.c. conductivity tuneable between 104 and 105Scm1. These composites can inject holes efficiently into all-printed polymer organic transistors. The insulator-metal transformation can also be electrically induced at 1MVcm1, suggesting possible memory applications. © 2007 Nature Publishing Group.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1038/nmat1806
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.doi10.1038/nmat1806
dc.description.sourcetitleNature Materials
dc.description.volume6
dc.description.issue2
dc.description.page149-155
dc.identifier.isiut000243941800022
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