کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7134224 | 1461851 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High performance CuS p-type thin film as a hydrogen gas sensor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
In this study, CuS thin films with p-type behaviour were prepared using two solvent types: deionized water (S1) and deionized water mixed with ethanol (S2). The thin films were deposited onto substrates comprising glass slide, multilayer of ZnO/Cu/ZnO, ZnO nanorods and Poly(methyl methacrylate) (PMMA). XRD analysis revealed the presence of covellite-CuS phase and chalcocite-Cu2S phase with average crystallite sizes of 14.1Â nm and 15.4Â nm, respectively in S1 sample while only covellite-CuS phase with an average crystallite size of 11.6Â nm was identified for S2. Morphological observations (SEM) showed smaller sized nanoplates in S1 compared to S2. The results from implementation of the two devices as hydrogen gas sensors revealed S1 exhibits better sensitivity (98.9% at 1000Â ppm) and shorter response and recovery times (16Â s and 34Â s at 800Â ppm, respectively) compared to S2 (sensitivity of 78.4% at 1000Â ppm; response and recovery times of 35Â s and 24.4Â s at 1000Â ppm, respectively). The sensitivity was found to increase with increasing gas concentration for both samples. It was inferred from the results that CuS thin film prepared with only deionized water (S1) has a higher H2 gas detection potential.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators A: Physical - Volume 249, 1 October 2016, Pages 68-76
Journal: Sensors and Actuators A: Physical - Volume 249, 1 October 2016, Pages 68-76
نویسندگان
Fayroz A. Sabah, Naser M. Ahmed, Z. Hassan, Hiba S. Rasheed,