Optimization ethanol detection performance manifested by gas sensor based on In2O3/ZnS rough microspheres
Abstract
Heterostructure In2O3 /ZnS composites material with rough spherical morphology was synthesized by two-step hydrothermal process in which pure ZnS microspheres acted as substrate for the coating of In 2 O 3 nanoparticles. The sensor based on In2O3/ZnS composites microspheres presents superior sensing performance to 100 ppm ethanol at 260 °C. The sensor based on In2O3/ZnS composites microspheres possess fast response and recovery time (21 and 34 s). The modulation of the potential barrier height in the In2O3/ZnS heterostructure are the main reasons for the enhanced sensing performance.
- Publication:
-
Sensors and Actuators B: Chemical
- Pub Date:
- July 2018
- DOI:
- 10.1016/j.snb.2018.02.172
- Bibcode:
- 2018SeAcB.264..263C
- Keywords:
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- In<SUB loc="post">2</SUB>O<SUB loc="post">3</SUB>/ZnS composites;
- Sensor;
- Heterostructure;
- Ethanol;
- Hydrothermal