Effects of SnO2 Doping on the Performance of ZnO Porous Thick Film Gas Sensors
By using a unique hydrothermal hot-press (HHP) technique, ZnO and ZnO/SnO2 composite porous nanosolids (the content of SnO2 is 0, 1, 5 and 10 wt.％, respectively) were prepared. Furthermore, four kinds of gas sensors were fabricated by using ZnO (the sensor denoted as ZS0) and ZnO/SnO2 composite (denoted as ZS1, ZS5 and ZS10 respectively) porous nanosolids. The intrinsic resistance and gas sensing performance of sensors ZS0, ZS1, ZS5 and ZS10 to ethanol and acetone were tested. By comparing with that of ZS0, the sensors ZS1, ZS5 and ZS10 have obviously lower intrinsic resistance and working temperature, and their selectivity to ethanol was also improved. The reason for above results has been analyzed on the basis of micro-morphology observations.
composite porous nanosolid SnO2 doping ZnO porous thick film gas sensor intrinsic resistance electrical response
Hongyan Xu Yuntao Song Deliang Cui
School of Materials Science and Engineering, University of Jinan, Jinan 250022, China State Key Lab School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
55-60
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）