کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
741027 894213 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced sensing properties of defect-controlled ZnO nanotetrapods arising from aluminum doping
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Enhanced sensing properties of defect-controlled ZnO nanotetrapods arising from aluminum doping
چکیده انگلیسی

We report the synthesis of Al-doped ZnO nanotetrapods and investigate the effects on their sensing properties. It is found that Al doping introduces more defects based on the results of Raman and photoluminescence experiments and further confirmed by the sensing experiments. The green emission is enhanced and the relative intensity ratio between the green emission and the ultraviolet emission increases for Al-doped ZnO nanotetrapods. The ethanol sensing properties of ZnO nanotetrapods are effectively improved by Al doping. These can be explained in terms of the enhanced modulation of conductance caused by the preferential adsorption of the ethoxy on the oxygen vacancies. Our results provide an approach to exploit the improvement of gas sensitivity of ZnO nanomaterials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 147, Issue 1, 18 May 2010, Pages 165–169
نویسندگان
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