کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1525987 1511846 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Growth and field emission properties of chessman-like and tower-like ZnO nanostructures
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Growth and field emission properties of chessman-like and tower-like ZnO nanostructures
چکیده انگلیسی

Novel ZnO chessman-like and tower-like nanostructure arrays were synthesized by a simple thermal evaporation method. The morphology showed hierarchical structures which were believed to grow at different stages of the growth process. The growth mechanism of the nanostructures was discussed in detail. The difference between the chessman-like and tower-like structures was due to the different growth pressure during the cooling process. Various top morphologies were due to the different places relevant to the source. By keeping the other parameters the same, the chessman-like structures with sharp tops have the lowest turn-on electric field and threshold electric field. This superiority benefited from sharper top morphology and weaker field-screening effect as a consequence of the lower emitter density.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 115, Issues 2–3, 15 June 2009, Pages 771–774
نویسندگان
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