کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5359773 | 1503705 | 2009 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis, optical and field emission properties of ZnO microhair-clasps
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
ZnO microhair-clasps were synthesized on silicon substrate by the vapor-phase transport method at the temperature of 900 °C under atmospheric pressure. The microstructure and morphology of ZnO microhair-clasps were evaluated by using X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The growth mechanism of the microhair-clasps was investigated. Room temperature photoluminescence spectra of the microhair-clasps showed a weak UV emission band centering at about 388 nm and wide green emissions around 525 nm. Field emission measurements demonstrated that the microhair-clasps with many sharp tips of several nanometers in curvature radius possessed good performance with a turn-on field of â¼1.5 V/μm and a threshold field of â¼4.3 V/μm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 255, Issues 13â14, 15 April 2009, Pages 6487-6492
Journal: Applied Surface Science - Volume 255, Issues 13â14, 15 April 2009, Pages 6487-6492
نویسندگان
Yu'e Xu, Ke Yu, Jin Wu, Jianwen Xu, Dejian Shang, Ziqiang Zhu,