Application of Aligned ZnO Nanowires/Nanobelts as a Room Temperature NO Gas Sensor

作者：Kaur Manmeet; Chauhan Shiv Veer Singh; Sinha Shivangi; Bharti Meetu; Mohan Rajneesh; Gupta S K^*; Yakhmi J V

来源：Journal of Nanoscience and Nanotechnology, 2009, 9(9): 5293-5297.

DOI：10.1166/jnn.2009.1118

• Gas Sensor
• NO Gas
• Nanowire
• Dielectrophoresis

Gas sensing properties of devices fabricated using ZnO nanowires/nanobelts (NS) aligned between two electrodes using clielectrophoresis technique were investigated. ZnO nanostructures were synthesized by carbothermal method. The devices were characterized as gas sensors and showed high sensitivity for detection of NO gas at room temperature. Typical sensor response, defined as the relative change in resistance, due to the introduction of the gas was found to be similar to 500% for 40 ppm of NO gas. The devices showed average response and recovery times of about 30 s and 1 min respectively. The results demonstrate the potential of fabricating nanosized sensors using single nanowires/nanobelts.

• 出版日期2009-9