Highly sensitive electrical detection of TCNE on chemically passivated silicon-on-insulator‡

Literature Information

Publication Date 2011-09-05
DOI 10.1039/C1CC12504D
Impact Factor 6.222
Authors

Federico Rosei, Gregory P. Lopinski


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Abstract

Adsorption of tetracyanoethylene (TCNE) onto hydrogen terminated, n-type silicon-on-insulator is shown to cause significant depletion of majority carriers. Employing an ambient pseudo-MOSFET, ppm levels of TCNE vapour rapidly decrease the n-channel saturation current by at least two orders of magnitude. Covalent passivation with a decyl monolayer improves the reversibility of the response while only slightly decreasing the sensitivity.

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