Design of nanoscale capacitors based on metallic borophene and insulating boron nitride layers
نویسندگان
چکیده
In alignment with the efforts on miniaturizing components of electronic devices enhanced performance, we investigate a dielectric nanocapacitor (DNC) based metallic borophene electrodes separated insulating hexagonal boron nitride (h-BN) monolayers ($n=1--5$). The capacitive performance proposed DNC as function applied electric field ($\stackrel{P\vec}{E}$) and thickness material is examined by using ab initio methods. plates h-BN are commensurate coupled only van der Waals interaction, which constitutes an ideal configuration DNC. It found that single layer not thick enough spacer to hinder quantum tunneling effects, similar case no layer, shorted. Being effective from two layers, charge separation attained via $\stackrel{P\vec}{E}$ in vertical direction. capacitance rapidly saturates at $\stackrel{P\vec}{E}\ensuremath{\ge}0.1\phantom{\rule{0.28em}{0ex}}\mathrm{V}/\AA{}$ reaches its maximum value $0.77\phantom{\rule{0.28em}{0ex}}\ensuremath{\mu}\mathrm{F}/{\mathrm{cm}}^{2}$ for $n=2$. decreases increasing number layers distance between enlarges shows trend expected classical Helmholtz model. Our results suggest lightweight constituents design.
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ژورنال
عنوان ژورنال: Physical Review Materials
سال: 2021
ISSN: ['2476-0455', '2475-9953']
DOI: https://doi.org/10.1103/physrevmaterials.5.124002