کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5366042 | 1388342 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Detection of hydrogen with SnO2-coated ZnO nanorods
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
SnO2-coated ZnO nanorods on c-plane sapphire substrates were synthesized by pulsed laser deposition. The thickness of the polycrystalline SnO2 was â¼10 nm, as determined by high-resolution transmission electron microscopy, while the diameter of the ZnO nanorods was â¼30 nm. The sensitivity of the SnO2/ZnO structures to hydrogen was tested by depositing Ti/Au Ohmic contacts on a random array of the nanorods and measuring the current at fixed voltage. There was no response to 500 ppm H2 in N2 at room temperature, but we obtained a sensitivity of â¼70% at 400 °C. The SnO2/ZnO structures exhibit drift in their recovery characteristics and for sequential detection of hydrogen, as generally reported for SnO2 thin film sensors.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 253, Issue 10, 15 March 2007, Pages 4748-4752
Journal: Applied Surface Science - Volume 253, Issue 10, 15 March 2007, Pages 4748-4752
نویسندگان
L.C. Tien, D.P. Norton, B.P. Gila, S.J. Pearton, Hung-Ta Wang, B.S. Kang, F. Ren,