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Title: Covalent assembly of gold nanoparticles: An application toward transistor memory
Authors: Gupta, R.K.
Ying, G.
Srinivasan, M.P. 
Lee, P.S.
Issue Date: 16-Aug-2012
Citation: Gupta, R.K., Ying, G., Srinivasan, M.P., Lee, P.S. (2012-08-16). Covalent assembly of gold nanoparticles: An application toward transistor memory. Journal of Physical Chemistry B 116 (32) : 9784-9790. ScholarBank@NUS Repository.
Abstract: This work reports a versatile approach utilizing covalent assembly of functionalized gold nanoparticles for organic field-effect transistor (OFET) based memory devices. 11-Mercapto-1-undecanol functionalized gold nanoparticles (AuNPs) having size of 5 ± 0.5 nm were synthesized and immobilized onto SiO 2 substrate through covalent binding using a functionalized polymer as a surface modifier. The pentacene OFET-based memory devices utilizing such covalently bound gold nanoparticles with nanoparticle density of 5 ×10 11 cm -2 exhibited a large memory window (7.7 V), high on/off ratio between memory states (10 5), and long retention time (>10 000 s). The present synthetic route for memory devices incorporating covalently immobilized gold nanoparticles has several advantages such as solution processable, enhanced device stability, low-cost, and low-temperature process and will be a step toward realization for low-cost, lightweight, flexible, logic display driver, and flash memory applications. © 2012 American Chemical Society.
Source Title: Journal of Physical Chemistry B
ISSN: 15206106
DOI: 10.1021/jp3008283
Appears in Collections:Staff Publications

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