WO3 nanosized gas sensitive powder synthesized by gas-state reaction

被引:0
|
作者
Yu, Hua-Liang [1 ]
Huang, Shi-Zhen [1 ]
Lin, Wei [1 ]
Chen, Wei [1 ]
机构
[1] Department of Electronic Science and Applied Physics, Fuzhou University, Fuzhou 350002, China
关键词
Chemical sensors - Nitrogen oxides - Powders - Reaction kinetics - Semiconductor materials - Sensitivity analysis - Synthesis (chemical) - Tungsten compounds;
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学科分类号
摘要
The preparation of material is critical to fabrication of gas sensor made from semiconductor. Nanometer WO3 was synthesized by gas-state reaction with tungsten filament and made into gas-sensor to NO2. The gas-sensing measurements results revealed that these sensors show a sensitivity about 10 when put into NO2 gas of very low density (about 10 -10) and respond quickly(about 1. 5 seconds). By analyzing micro-structure of the material, the mechanism of these sensors was uncovered.
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页码:325 / 328
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