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The role of defects in chemical sensing properties of carbon nanotube films |
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| Authors: | Zsolt E. Horváth Antal A. Koós Krisztián Kertész György Molnár Gábor Vértesy Márton C. Bein Tamás Frigyes Zoltán Mészáros József Gyulai László P. Biró |
| Affiliation: | (1) Research Institute for Technical Physics and Materials Science—MFA, Konkoly Thege Miklós út 29-33, 1121 Budapest, Hungary;(2) Budapest University of Technology and Economics, Műegyetem rkp. 3-9, 1111 Budapest, Hungary |
| Abstract: | The electrical resistance of 24 different carbon nanotube (CNT) thin film samples in blowing ambient air and 10 different analyte vapor environments was measured. The effects of the CNT growth method, different chemical treatments, ball milling, sample preparation conditions and Ar+-ion irradiation are compared. Significant differences in the response signal curves as a function of time in the case of the studied sensor/vapor combinations show the important role of the defect structure and attached functional groups in the chemical sensing properties of CNTs. |
| Keywords: | KeywordHeading" >PACS 73.63.Fg 85.35.Kt 07.07.Df 68.43.-h 68.35.Dv |
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