کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
742591 1462122 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A highly sensitive SnO2–CuO multilayered sensor structure for detection of H2S gas
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
A highly sensitive SnO2–CuO multilayered sensor structure for detection of H2S gas
چکیده انگلیسی

Sensing response characteristics of bare SnO2 thin film and SnO2–CuO multilayered structures having different CuO content (3 vol%, 6 vol% and 12 vol%) towards 20 ppm H2S gas has been studied. SnO2–CuO multilayered structure having an optimum amount of 3 vol% CuO is found to exhibit a high response of 2.7 × 104 at a relatively low operating temperature of 140 °C, with a fast response time (t90) of 2 s. The enhanced sensing response and the fast response speed are due to the porous microstructure of the deposited thin films in the multilayered sensor structures and the spill-over of the dissociated H2S gas molecules by the CuO layers on the surface of sensing SnO2 layers.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volumes 166–167, 20 May 2012, Pages 378–385
نویسندگان
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