Possible application of single-walled carbon nanotube transistors for humidity sensor
作者： Pil-Sun Na , Hyo-Jin Kim , Young-Hwa Lee , Jeong-O Lee , Jin-Hee Kim
DOI: 10.5369/JSST.2005.14.5.331
关键词: Nanotechnology 、 Carbon nanotube 、 Field-effect transistor 、 Optoelectronics 、 Humidity 、 Doping 、 Semiconductor 、 Conductance 、 Carbon nanotube field-effect transistor 、 Materials science 、 Carbon nanotube quantum dot
摘要: The influence of water molecule on the electrical properties single-walled carbon nanotube field effect transistors (SWNT-FETs) was reported. Conductance suppression observed with increase humidity. This can be explained by doping SWNT-FETs, which has p-type semiconductor characteristic, molecules acting as an electron donor. However, after 65 % humidity, conductance SWNT-FETs started to again, due opening channels. Upon annealing at in Ar atmosphere, increases more than 500 %, and threshold voltage shifts toward further positive gate voltages. results this experiment support possible application nanotubes for humidity sensing material.
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