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Title: Bilayer memory device based on a conjugated copolymer and a carbon nanotube/polyaniline composite
Authors: Li, L. 
Ling, Q.-D. 
Zhu, C. 
Chan, D.S.H. 
Kang, E.-T. 
Neoh, K.-G. 
Issue Date: 2008
Citation: Li, L., Ling, Q.-D., Zhu, C., Chan, D.S.H., Kang, E.-T., Neoh, K.-G. (2008). Bilayer memory device based on a conjugated copolymer and a carbon nanotube/polyaniline composite. Journal of the Electrochemical Society 155 (4) : H205-H209. ScholarBank@NUS Repository.
Abstract: A write-once read-many-times (WORM) memory device based on two layers of electroactive polymers sandwiched between an aluminum electrode and an indium-tin-oxide (ITO) electrode was fabricated. The electroactive polymer bilayer consisted of a conjugated copolymer film of 9,9-dihexylfluorene and Eu-complexed benzoate (P6FBEu) and a composite film of soluble self-aligned carbon nanotubes/polyaniline (PAN+CNT). At CNT contents above 1 wt %, the bilayer WORM memory device exhibited a low turn-on voltage of ∼2 V and a high ON/OFF current ratio of 105, in comparison to a turn-on voltage of 3.8 V and an ON/OFF current ratio of 103 for the corresponding CNT-free ITOPANP6FBEuAl bilayer device. The ON and OFF states endured up to 106 read cycles at a read voltage of 1 V. The introduction of the PAN+CNT composite film as an electroactive layer in the memory device has resulted in a reduction in switching voltage, as well as an increase in ON/OFF current ratio, compared to those of the CNT-free single-layer and bilayer devices. © 2008 The Electrochemical Society.
Source Title: Journal of the Electrochemical Society
ISSN: 00134651
DOI: 10.1149/1.2833047
Appears in Collections:Staff Publications

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