کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8918389 | 1642840 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electronic band structure of carbon honeycombs
ترجمه فارسی عنوان
ساختار باند الکترونیکی سلولهای کربنی
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کلمات کلیدی
وزن فوق العاده ای اسپری هیبریداسیون، نیمه هادی، فاصله باند، بور لانه زنبوری، پراکندگی فونون،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
In this article, we present the electronic properties of various carbon honeycombs (C-honeycombs) with different cell sizes and junction types based on ab initio calculations. Among the three typical C-honeycombs with junctions connected via the zigzag edge, the armchair edge, or the hybrid edges of graphene nanoribbons, it is found that the zigzag C-honeycombs and the hybrid ones exhibit metallic properties. However, the armchair C-honeycombs are metallic only if the number of atomic planes N of the graphene nanoribbon in the C-honeycomb sidewall follows NÂ =Â 3p+1, with p as an integer and are semiconducting for other N. For those semiconducting ones, the bandgap of the C-honeycomb is about 1.19Â eV with the narrowest sidewall (5.2Â Ã
) and monotonically decreases to about 0.15Â eV when the width is increased to 34.8Â Ã
. The semiconducting nature of such C-honeycombs with nanometer size pores may be used for lightweight semiconductor in electronic devices or supercapacitor energy storage. As a comparison, we show that all boron honeycombs are metallic, and their electronic properties are independent of sidewall widths.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Today Physics - Volume 5, June 2018, Pages 72-77
Journal: Materials Today Physics - Volume 5, June 2018, Pages 72-77
نویسندگان
Zhenqian Pang, Xiaokun Gu, Yujie Wei, Ronggui Yang,