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In2O3-ZnO pyramids like structure prepared by Spray-pyrolysis Technique for gas Sensing Applications | ||
| Iraqi Journal of Science | ||
| Article 1, Volume 59, Issue 1, 2018, Pages 67-74 | ||
| Authors | ||
| Ismaail K. Jasim; Isam M. Ibrahim; Marwan K. Alyas | ||
| Abstract | ||
| 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. | ||
| Keywords | ||
| Polycrystalline Indium oxide; Zinc oxide; pyrolysis technique at relatively low substrate temperature; Field emission scanning electron microscope; SEM; The hall effect measurements show that the prepared samples have n; type charge carriers; The films were examined as gas sensor against H; and; and it was found that the IZO sample a good sensitivity to H; with relatively fast response time of | ||
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