کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
751662 895251 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Acetone vapour sensing characteristics of cobalt-doped SnO2 thin films
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Acetone vapour sensing characteristics of cobalt-doped SnO2 thin films
چکیده انگلیسی

Gas sensing behaviour of cobalt-doped tin oxide (Co–SnO2) thin films, synthesized by conventional spray pyrolysis technique, has been investigated for carbon dioxide, oxygen and acetone vapour. Structural and elemental analysis of the Co–SnO2 films was carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDAX). The XRD spectrum revealed the polycrystalline nature of the film with a mixed phase comprising of SnO2 and Co3O4. The surface morphology, as seen in the SEM image, was observed to be granular, uniformly covering the entire substrate surface. The gas/vapour sensing studies performed in dry air at different temperatures in the range of 50–300 °C indicated better sensing characteristics for acetone vapour as compared to carbon dioxide and oxygen gases. The influence of cobalt concentration and operating temperature on the sensor performance has also been investigated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 125, Issue 1, 16 July 2007, Pages 126–130
نویسندگان
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