期刊
SENSORS
卷 17, 期 6, 页码 -出版社
MDPI
DOI: 10.3390/s17061203
关键词
a-IGZO; gas sensor; ethanol; H-2; CO; selectivity
资金
- Special Strategic Funds for Development of Emerging Industry of Shenzhen [JCYJ201409021103542]
Amorphous indium gallium zinc oxide (a-IGZO) powder was prepared by typical solution-based process and post-annealing process. The sample was used as sensor for detecting C2H5OH, H-2 , and CO. Gas-sensing performance was found to be highly sensitive to C2H5OH gas in a wide range of concentration (0.5-1250 ppm) with the response of 2.0 towards 0.5 ppm and 89.2 towards 1250 ppm. Obvious difference of response towards C2H5OH, H2, and CO was found that the response e.g., was 33.20, 6.64, and 2.84 respectively at the concentration of 200 ppm. The response time and recovery time of was 32 s and 14 s respectively towards 200 ppm concentration of C2H5OH gas under heating voltage of 6.5 V.
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