کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5359611 1503635 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Non-crystallization and enhancement of field emission of cupric oxide nanowires induced by low-energy Ar ion bombardment
ترجمه فارسی عنوان
غیر کریستالیزاسیون و افزایش انتشار میدان از نانوسیمهای مس اکسیژن ناشی از بمباران یونهای کم انرژی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
The effect of low energy Ar ion bombardment on the structure and field emission properties of CuO nanowires was studied. The morphology and structure were characterized by scanning electron microscopy and high resolution transmission electron microscopy. Non-crystallization of the nanowire was found after bombardment, which was due to the diffusion of the defects induced by knock-on ions. The work function of nanowires decreased after bombardment which was attributed to the preferential sputtering of oxygen. Field emission measurements showed that after bombardment with different energy the turn-on field decreased first and then increased with increasing ion energy. The lowest turn-on field was obtained with the optimal ion energy of 215 eV. The typical turn-on fields of the as-grown samples and samples after Ar ion bombardment with energy of 215 eV were about 6.5 V/μm and 5.25 V/μm, respectively. The lowered field emission turn-on field was attributed to the increase of field enhancement factor and decrease of work function.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 329, 28 February 2015, Pages 94-103
نویسندگان
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