High-performance planar nanoscale dielectric capacitors

TL;DR

This paper introduces a model for nanoscale dielectric capacitors using graphene and boron nitride, demonstrating high capacitance suitable for flexible nanoelectronics and energy storage.

Contribution

It presents a first-principles model of planar nanoscale capacitors with high gravimetric capacitance, enabling new designs for 2D flexible nanoelectronic devices.

Findings

High gravimetric capacitance comparable to supercapacitors

Capacitors can be configured in series, parallel, and mixed arrangements

Potential applications in flexible nanoelectronics and energy storage

Abstract

We propose a model for planar nanoscale dielectric capacitor consisting of a single layer, insulating hexagonal boron nitride (BN) stripe placed between two metallic graphene stripes, all forming commensurately a single atomic plane. First-principles density functional calculations on these nanoscale capacitors for different levels of charging and different widths of graphene - BN stripes mark high gravimetric capacitance values, which are comparable to those of supercapacitors made from other carbon based materials. Present nanocapacitor model allows the fabrication of series, parallel and mixed combinations which offer potential applications in 2D flexible nanoelectronics, energy storage and heat-pressure sensing systems.