Title of article :
Hydrogen sensing properties of ZnO nanorods: Effects of annealing, temperature and electrode structure
Author/Authors :
?ztürk، نويسنده , , Sadullah and K?l?nç، نويسنده , , Necmettin and Torun، نويسنده , , ?mren and K?semen، نويسنده , , Arif and ?ahin، نويسنده , , Yasin and Ozturk، نويسنده , , Zafer Ziya، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Pages :
8
From page :
5194
To page :
5201
Abstract :
In this study, the hydrogen (H2) sensing properties of vertically aligned zinc oxide (ZnO) nanorods were investigated depending on annealing, Pd coating, temperature and electrode structure. ZnO nanorods were fabricated by using hydrothermal method on a glass substrate and an indium tin oxide (ITO) coated glass substrate. In order to determine the effects of annealing on the H2 sensor performance, the nanorods were heated at 500 °C in dry air. H2 sensing measurements were done in the temperature range of 25–200 °C. It was found that, the sensor response of Pd coated ZnO nanorods were much higher than the un-coated nanorods due to the catalytic effect of Pd thin film. Moreover, the un-annealed samples showed better sensor response than the annealed samples due to the number of oxygen deficiency. In addition, the lateral electrode structure showed higher sensor response than the sandwich electrode structure.
Keywords :
Gas sensor , ZNO , nanorods , Hydrothermal process , H2 sensor
Journal title :
International Journal of Hydrogen Energy
Serial Year :
2014
Journal title :
International Journal of Hydrogen Energy
Record number :
1867847
Link To Document :
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