Photoluminescence studies on BCN thin films synthesized by RF magnetron sputtering

Prakash, Adithya; Sundaram, Kalpathy B.; Campiglia, Andrés D.

doi:10.1016/j.matlet.2016.07.140

Cited by 23 publications

(15 citation statements)

References 25 publications

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“…The atomic bonding similarity amongst boron (B), carbon (C), and nitrogen (N) allows for the formation of a ternary boron carbonitride (BCN) system with a wide compositional range, including typical materials, such as diamond, graphite, fullerene, cubic BN (c-BN), hexagonal BN (h-BN), B 4 C, C 3 N 4 , BCN, BC 2 N, and so on [1][2][3], consequently, when combining their properties, making them adaptable for diverse applications [4][5][6]. Particularly, hybridizing between semi-metallic graphite and insulating BN [7], BCN ternary exhibits excellent semiconducting properties with an adjustable band gap, hence making it a suitable candidate in optoelectronic devices, luminescent devices, transistors, and micro-electrical-mechanical system (MEMS), just to name a few [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Self-Ordered Orientation of Crystalline Hexagonal Boron Nitride Nanodomains Embedded in Boron Carbonitride Films for Band Gap Engineering

Gao

Wang

et al. 2019

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Boron carbonitride (BCN) films containing hybridized bonds involving elements B, C, and N over wide compositional ranges enable an abundant variety of new materials, electronic structures, properties, and applications, owing to their semiconducting properties with variable band gaps. However, it still remains challenging to achieve band gap-engineered BCN ternary with a controllable composition and well-established ordered structure. Herein, we report on the synthesis and characterization of hybridized BCN materials, consisting of self-ordered hexagonal BN (h-BN) crystalline nanodomains, with its aligned basal planes preferentially perpendicular to the substrate, depending on the growth conditions. The observation of the two sets of different band absorptions suggests that the h-BN nanodomains are distinguished enough to resume their individual band gap identity from the BCN films, which decreases as the carbon content increases in the BCN matrix, due to the doping and/or boundary effect. Our results reveal that the structural features and band gap of this form of hybrid BCN films are strongly correlated with the kinetic growth factors, making it a great system for further fundamental physical research and for potential in the development of band gap-engineered applications in optoelectronics.

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Section: Introductionmentioning

confidence: 99%

Self-Ordered Orientation of Crystalline Hexagonal Boron Nitride Nanodomains Embedded in Boron Carbonitride Films for Band Gap Engineering

Gao

Wang

et al. 2019

Coatings

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“…Among these methods, precursor pyrolysis has the advantages of high production efficiency, low preparation cost, easy shaping and tunable composition, thus are widely used to prepare low-dimensional materials. Electrospinning is a fast, simple and efficient fiber production technology [14]. Nanofibers prepared by electrospinning usually have a higher specific surface area and sufficient active sites, which is very beneficial to improve the catalytic performance of the material [15,16].…”

Section: Instructionmentioning

confidence: 99%

Facile preparation of BCN nanofibers with tunable band gaps

Zhang

2020

E3S Web Conf.

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As a new synthetic metal-free material, BCN has aroused great interests in the field of photocatalyst materials due to its lower cost as well as higher reliability and better sustainability. In this work, we prepared BCN nanofibers by electrospinning of precursor solution containing polyacrylonitrile and ammonia borane, and then pyrolyzed the polymer fibers in NH3. Infrared spectroscopy (FT-IR), Scanning emission microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) were used to analyse the composition and structure of the samples. The results show that the BCN nanofibers have an average diameter of 50-100 nm and mainly compose of BN nanocrystals. C atoms are distributed at the BN grain boundary in terms of B-C and B-N bonds. The band gap of the fibers is between 2.1-2.7 eV and can be adjusted by changing the ratio of PAN and AB in the raw materials.

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“…Chemical substitutions on layered materials are capable of band structure tailoring which could lead to significant modifications of the properties of pristine lattices through very strong host-guest multi-orbital hybridizations. With the use of modern experimental growth techniques, ternary and binary compounds, which are characterized by B x C y N z , have been successfully synthesized for three-dimensional (3D) bulk systems [1,2], two-dimensional (2D) layers [3], one-dimensional (1D) cylindrical nanotubes [4], 1D nanoribbons [5], and zero-dimensional (0D) quantum dots [6]. Their geometric structures vary from three to zero dimensions, as observed in carbon-related systems [7,8].…”

Section: Introductionmentioning

confidence: 99%

“…The main reason lies in the distinct ionization energies of their components, being consistent with the tight-binding model for non-vanishing diagonal Hamiltonian matrix elements (the sublattice-dependent site energies). Gap engineering could be achieved by transforming the strengthful relations in the π, σ, and sp 3 Chemisorption and substitution of carbon atoms on silicene are two very interesting procedures, since first-principles predictions are available for understanding the important differences between these two types of chemical modification [10,11], and providing additional information regarding another approach for the formation of silicon-carbide compounds [12] or induce magnetism based on transition-metals are embedded in silicene [13]. Based on the viewpoint of a silicon-created honeycomb lattice, carbon atoms are regarded as adatoms and guest ones, respectively.…”

Section: Introductionmentioning

confidence: 99%

Diverse Properties of Carbon-Substituted Silicenes

et al. 2020

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The theoretical framework, which is built from the first-principles results, is successfully developed for investigating emergent two-dimensional materials, as it is clearly illustrated by carbon substitution in silicene. By the delicate VASP calculations and analyses, the multi-orbital hybridizations are thoroughly identified from the optimal honeycomb lattices, the atom-dominated energy spectra, the spatial charge density distributions, and the atom and orbital-decomposed van Hove singularities, being very sensitive to the concentration and arrangements of guest atoms. All the binary two-dimensional silicon-carbon compounds belong to the finite- or zero-gap semiconductors, corresponding to the thoroughly/strongly/slightly modified Dirac-cone structures near the Fermi level. Additionally, there are frequent π and σ band crossings, but less anti-crossing behaviors. Apparently, our results indicate the well-defined π and σ bondings.

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Photoluminescence studies on BCN thin films synthesized by RF magnetron sputtering

Cited by 23 publications

References 25 publications

Self-Ordered Orientation of Crystalline Hexagonal Boron Nitride Nanodomains Embedded in Boron Carbonitride Films for Band Gap Engineering

Self-Ordered Orientation of Crystalline Hexagonal Boron Nitride Nanodomains Embedded in Boron Carbonitride Films for Band Gap Engineering

Facile preparation of BCN nanofibers with tunable band gaps

Diverse Properties of Carbon-Substituted Silicenes

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