Publication: Nanothin polyaniline film for highly sensitive chemiresistive gas sensing
Issued Date
2013-06-01
Resource Type
ISSN
15214109
10400397
10400397
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2-s2.0-84878969491
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Mahidol University
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SCOPUS
Bibliographic Citation
Electroanalysis. Vol.25, No.6 (2013), 1439-1445
Suggested Citation
Sira Srinives, Tapan Sarkar, Ashok Mulchandani Nanothin polyaniline film for highly sensitive chemiresistive gas sensing. Electroanalysis. Vol.25, No.6 (2013), 1439-1445. doi:10.1002/elan.201300015 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/31531
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Title
Nanothin polyaniline film for highly sensitive chemiresistive gas sensing
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Abstract
This study developed a facile technique for site-specific synthesis of nanometer-thick polyaniline (PANI) film for fabrication of field-effect transistor/chemiresistor sensors. The nanothin film had a thickness of 9-20nm and was of carpet-like morphology offering a highly accessible surface geometry that enhanced gas adsorption and promoted surface reaction/interaction. When applied for sensing of ammonia (NH3) and nitrogen dioxide (NO2), the performance of the nanothin film device was comparable to that of a 1-dimensional (1-D) nanostructure, with a great advantage in ease of processing. Sensing mechanism study indicated electrostatic gating as the dominating mode of sensing. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.