Research Article
Effect of Electrode Shape on the Performance of ZnO-Based Ethanol Sensor
Table 2
Comparison of ZnO-based gas sensors.
| | Sensor structure | Sensor response time (s) | Response definition | Grain size (nm) | Temperature | Gas type |
| | ZnO nanostructure [39] | 5.8 (50 ppm) | Rair/Rgas | 60 | 350°C | Ammonia | | ZnO hollow sphere [40] | 28 (200 ppm) | Rair/Rgas | 5–8 | 400°C | Ammonia | | ZnO nanorods [41] | 40 (30 ppm) | Igas/Iair | 30–50 | Room temperature | Ammonia | | ZnO-nanowire [11] | 12 (2,000 ppm) | Rair/Rgas | 60–180 | 240°C | Ethanol | | Au doped ZnO nanowires [11] | 38 (200 ppm) | Rair/Rgas | 15–25 | 240°C | Ethanol | | This research | 43 (2,000 ppm) | (Rgas-Rair)/Rair | ∼35 | 200°C | Ethanol |
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