The role of defects in chemical sensing properties of carbon nanotube films
JournalName :
Applied Physics A
PubDateYear :
2008
PubDateOther :
Volume :
93
Issue :
StartPage :
495
EndPage :
504
Keywords :
TOP_Sensing;W_Experiment;W_Nanotube
Notes :
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.
