Acetone gas sensors composed of carbon nanotubes with adsorbed Au nanoparticles on plastic substrate
Microsystem Technologies-micro-and Nanosystems-information Storage and Processing Systems(2017)
摘要
Carbon nanotubes (CNTs) have been demonstrated to be one of the most interesting materials for gas sensing. This study applies a simple method for the direct transfer of high-density CNTs from a SiO 2 /Si substrate to a flexible substrate for acetone gas sensing at room temperature. The flexible gas sensor exhibited high sensitivities of 4.63% at room temperature for ambient acetone gas concentrations of 800 ppm, respectively. In addition, the gas response of the CNT-based chemiresistor is attributed to p-type conductivity in the Au-modified semiconducting CNTs. Very good repeatability of the sensor response to gas concentration is demonstrated, representing a major step toward the low-cost large-scale production of this class of device.
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关键词
adsorbed au nanoparticles,carbon nanotubes,au nanoparticles,acetone
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