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Bandgap engineering by substituting C with B and N atoms in graphene has been shown to be a promising way to improve semiconducting properties of graphene. Such hybridized monolayers consisting of hexagonal BN phases in graphene (h-BNC)…

材料科学 · 物理学 2015-05-28 Qing Peng , Amir Zamiri , Suvranu De

Monolayer lateral heterostructure of graphene and hexagonal boron nitride (h-BNC) has attracted a growing attention mainly due to its tunable band-gap character and unique physical properties at interface. Hereby, we reported the first-time…

We use first-principle density functional theory (DFT) to study the transport properties of single and double barrier heterostructures realized by stacking multilayer h-BN or BC$_{2}$N, and graphene films between graphite leads. The…

介观与纳米尺度物理 · 物理学 2012-12-20 Samantha Bruzzone , Gianluca Fiori , Giuseppe Iannaccone

Since the rising of graphene, boron nitride monolayers have been deeply studied due to their structural similarity with the former. A hexagonal graphene-like boron-carbon-nitrogen (h-BCN) monolayer was synthesized recently using bis-BN…

Current interest in two-dimensional materials extends from graphene to others systems like single-layer hexagonal boron-nitride (h-BN), for the possibility of making heterogeneous structures to achieve exceptional properties that cannot be…

材料科学 · 物理学 2013-09-04 Jiangtao Wu , Baolin Wang , Yujie Wei , Ronggui Yang , Mildred Dresselhaus

Finding an effective and controllable way to create a sizable energy gap in graphene-based systems has been a challenging topic of intensive research. We propose that the hybrid of boron nitride and graphene (h-BNC) at low BN doping serves…

介观与纳米尺度物理 · 物理学 2023-12-01 Chih-Piao Chuu , Wei-En Tseng , Kuan-Hung Liu , Ching-Ming Wei , Mei-Yin Chou

We investigate interlayer adhesion and relaxation at interfaces between graphene and hexagonal boron nitride (hBN) monolayers in van der Waals heterostructures. The adhesion potential between graphene and hBN is calculated as a function of…

The structural similarity between hexagonal boron nitride (h-BN) and graphene nanoribbons allows for the formation of heterojunctions with small chain stress. The combination of the insulation nature of the former and the quasi-metallic…

Encapsulating graphene in hexagonal Boron Nitride has several advantages: the highest mobilities reported to date are achieved in this way, and precise nanostructuring of graphene becomes feasible through the protective hBN layers.…

介观与纳米尺度物理 · 物理学 2021-01-04 Yongping Du , Ning Xu , Xianqing Lin , Antti-Pekka Jauho

Hexagonal boron nitride (h-BN) is a promising two-dimensional insulator with a large band gap and low density of charged impurities that is isostructural and isoelectronic with graphene. Here we report the chemical and atomic-scale…

Vertical integration of two-dimensional materials has recently emerged as an exciting method for the design of novel electronic and optoelectronic devices. Using density functional theory, we investigatethe structural and electronic…

材料科学 · 物理学 2015-06-25 Yongqing Cai , Gang Zhang , Yong-Wei Zhang

We investigate the electronic properties of heterostructures based on ultrathin hexagonal boron nitride (h-BN) crystalline layers sandwiched between two layers of graphene as well as other conducting materials (graphite, gold). The tunnel…

We calculate theoretically the disorder-limited conductivity of monolayer and bilayer graphene on hexagonal boron nitride (h-BN) substrates, comparing our theoretical results with the recent experimental results. The comparison leads to a…

介观与纳米尺度物理 · 物理学 2011-03-17 S. Das Sarma , E. H. Hwang

Electronic properties of the graphene layer sandwiched between two hexagonal boron nitride sheets have been studied using the first-principles calculations and the minimal tight-binding model. It is shown that for the ABC-stacked structure…

材料科学 · 物理学 2010-11-10 J. Slawinska , I. Zasada , P. Kosinski , Z. Klusek

Hexagonal boron nitride (h-BN) is a natural hyperbolic material, for which the dielectric constants are the same in the basal plane (epsilon^t = epsilon^x = epsilon^y) but have opposite signs (epsilon^t*epsilon^z < 0) from that in the…

We theoretically investigate the electronic structures of moir\'{e} superlattices arising in monolayer / bilayer graphene stacked on hexagonal boron nitride (hBN) in presence and absence of magnetic field. We develop an effective continuum…

介观与纳米尺度物理 · 物理学 2014-10-10 Pilkyung Moon , Mikito Koshino

Being used in optoelectronic devices as ultra-thin conductor-insulator junctions, detailed investigations are needed about how exactly h-BN and graphene hybridize. Here, we present a comprehensive ab initio study of hot carrier dynamics…

介观与纳米尺度物理 · 物理学 2022-07-01 Sangkha Borah , Dinesh Yadav , Maxim Trushin , Fabian Pauly

In this study, we highlight the potential of strain engineering in graphene/hBN (hexagonal Boron nitride) 2D heterostructures, enabling their use as wide-range light absorbers with significant implications for optoelectronic applications.…

介观与纳米尺度物理 · 物理学 2024-07-17 Priyanka Sinha , Prasanta K. Panigrahi , Bheemalingam Chittari

Recently, Bafekry et al. [J. Appl. Phys. 130, 114301(2021)] reported their density functional theory (DFT) results on the structural, phonon dispersion, elastic constants and electronic properties of a BCN monolayer. The aforementioned…

材料科学 · 物理学 2022-06-22 Bohayra Mortazavi , Fazel Shojaei , Mehdi Neek-Amal

In this Letter, we derive an effective theory of graphene on a hexagonal Boron Nitride (h-BN) substrate. We show that the h-BN substrate generically opens a spectral gap in graphene despite the lattice mismatch. The origin of that gap is…

介观与纳米尺度物理 · 物理学 2012-11-12 M. Kindermann , Bruno Uchoa , D. L. Miller
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