Impact Factor:5.401
DOI number:10.1016/j.snb.2014.04.029
Affiliation of Author(s):山东大学
Journal:Sensors and Actuators B: Chemical
Abstract:Chemiresistive gas sensors with high sensitivity, selectivity and reliable fabrication potency for specific gas have been now expected for many applications. A highly sensitive and selective nanostructured triethylamine (TEA) gas sensorhas beenfabricated successfully by designing PN heterojunctionconsisting of ZnO nanosheets and NiO nanoparticles. The ZnO nanosheets directly grew on Al2O3 ceramic tubes by introducing a seed layer with a simple and cost-effective hydrothermal method. By employing pulsed laser deposition (PLD) method, the construction of NiO/ZnO PN heterojunction is highly controllable and reproducible. In comparison with ZnO nanosheet, the NiO/ZnO nanoparticle/nanosheet heterojunction exhibits much better sensing property to TEA gas. The depletion layer formed at the PN junction interface in NiO/ZnO sensor can greatly increase the resistance in air and decrease the resistance in TEA gas. Due to the general working principle and controllable growth strategy, this study provides a way for design and fabrication of the chemiresistive gas sensors with high performance.
Indexed by:Journal paper
Discipline:Engineering
First-Level Discipline:Materials Science and Engineering
Document Type:J
Volume:200
Page Number:288-296
Translation or Not:no
Date of Publication:2014-04-10
Included Journals:SCI
Links to published journals:https://doi.org/10.1016/j.snb.2014.04.029