HUANG Bin-bin, ZHANG Qin-yi, LIU Lei, et al. Research on influence of doping on gas sensitive properties of ZnO[J]. 2016, 35(5): 36-38+42. DOI: 10.13873/J.1000-9787(2016)05-0036-03.
Zn O is the first discovered metal oxide semiconductor( MOS) gas sensing material
doping in Zn O is a hotspot of research
22 kinds of doped Zn O gas sensing materials are prepared by mechanical ball milling method.Ethanol
acetone and benzene are used to test their gas sensing properties. The effects of chemical properties such as ionic radius
valence and periods of dopants on their gas sensing properties are compared. The sensors responses to the measured gases are higher than the others when their ionic radius are in the range of 0. 072
0
. 088 nm. Different periods of dopants have a certain influence on selectivity of Zn O nano gas sensors.