کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8032615 | 1517956 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Array of vertically aligned Al-doped ZnO nanorods: Fabrication process and field emission performance
ترجمه فارسی عنوان
آرایه ای از نانو ذره های آلومینیوم آلدود شده به صورت عمودی: فرایند تولید و عملکرد انتشار میدان
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
We report the development of a novel field emission (FE) device based on Al-doped ZnO nanorods (NRs), which can be used as an alternative tool for exhale biosensing applications. Highly crystalline hexagonal array of ZnO NRs doped with up to 5â¯wt% Al content were obtained using hydrothermal growth method. Field emission process with acceptable enhancement factor (761â¯<â¯Î²â¯<â¯951) were performed for 1 to 4â¯wt% Al-doped ZnO nanorod arrays. By increasing the Al content above 5â¯wt%, the morphology of nanorods started to transform into the nanoplates, demonstrating weak FE performance. When a high voltage was applied to 4â¯wt% Al-content ZnO NRs for a few times (4-6Ã), an abnormal microstructure formation with improved FE performance was observed. Significant field emission current with enormous enhancement factor (βâ¯=â¯5545) was demonstrated from the high Al-content reformed ZnO microstructure assembly. The formation of these microstructures was found to be due to the diffusion and electromigration of Au atoms through the grain boundaries into the NR assembly.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 656, 30 June 2018, Pages 6-13
Journal: Thin Solid Films - Volume 656, 30 June 2018, Pages 6-13
نویسندگان
M. Advand, M. Kolahdouz, A. Rostami, M. Masnadi-Shirazi, M. Norouzi, Amir Hossein Karami, N. Hajiabdolrahim,