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
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 N = 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 1.19 eV with the narrowest sidewall (5.2 Å) and monotonically decreases to about 0.15 eV when the width is increased to 34.8 Å. 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
نویسندگان
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