科研之友
微信
新浪微博
Facebook
分享链接
摘要
Molybdenum trioxide thin films of different thicknesses were prepared on a glass substrate with the chemical spray pyrolysis technique. The X-ray diffraction pattern indicates the formation of an alpha-MoO3 phase with a polycrystalline nature. The field-emission scanning electron micrograph of the surface indicates nanostructured lamellar crystallites. The trimethylamine vapour sensing property of the film was studied by the chemiresistive method at room temperature (approximate to 30 degrees C). Film with a thickness of 520 nm shows a response of 12% for 0.5 ppm of TMA vapour in 54% relative humidity, with response and recovery times of 32 s and 15 s, respectively. The detection limit and sensing response of the alpha-MoO3 thin film in a mixed environment were analysed and reported.
- 出版日期2014-3-15
