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In2O3-ZnO pyramids like structure prepared by Spray-pyrolysis Technique for gas Sensing Applications
Ismaail K. Jasim
,
Isam M. Ibrahim
,
Marwan K. Alyas
Iraqi Journal of Science, 2018, Volume 59, Issue 1A, Pages 67-74
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Polycrystalline Indium oxide
,
In2O3 and Indium oxide-zinc oxide
,
IZO thin films mixed with 10% ZnO content were prepared by spray-pyrolysis technique at relatively low substrate temperature
,
150 ˚C.Field emission scanning electron microscope
,
FE-SEM shows that the nanostructure at 10% ZnO content has pyramid like structure. The hall effect measurements show that the prepared samples have n-type charge carriers .The films were examined as gas sensor against H2S gas at different operating temperatures
,
200
,
250 and 300 oC
,
and it was found that the IZO sample a good sensitivity to H2S gas ~ 572 % at operating temperature 200 oC
,
with relatively fast response time of 19 s and recovery time of 17 s.
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