Abstract:High carbon-rich boroncarbonitride thin films have been grown by pulsed laser deposition (PLD) technique with using BN-C dual-targets. Fourier-transform infrared (FTIR) spectroscopy results presented B-N, B-C and C-N bonds, indicating the as-deposited thin films were new ternary compounds. B-N, B-C and C-N bonding structures were also detected by X-ray photoelectron spectroscopy (XPS), and carbon content fell into a large range of 45.8 to 85.9%. The films exhibited good thermalstability in vacuum, whereas were… Show more
“…Compared to the oriented BCN film without N 2 , the intensities of the B1s and N1s core level spectra significantly increased, while the C1s decreased. As a result of the addition of nitrogen, the B-B bonds and B-O bonds disappear, and the B-N (N-B) bonds increase, which might be induced by the N atoms preferentially binding to the B atoms to form BN [29,67,68]. As a result, the thickness of the outermost amorphous layer is reduced after the addition of nitrogen.…”
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.
“…Compared to the oriented BCN film without N 2 , the intensities of the B1s and N1s core level spectra significantly increased, while the C1s decreased. As a result of the addition of nitrogen, the B-B bonds and B-O bonds disappear, and the B-N (N-B) bonds increase, which might be induced by the N atoms preferentially binding to the B atoms to form BN [29,67,68]. As a result, the thickness of the outermost amorphous layer is reduced after the addition of nitrogen.…”
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.
“…Similar types of vibrational modes were observed within 1200-1750 cm −1 . 27,30 This band was present due to the diborate linkage (B-O-B) in the borate glassy network. In this linkage, both boron atoms are tetrahedrally coordinated with triborate super structural units.…”
Borate oxyfluoride glasses are transparent in the infra-red, ultra violet and visible regions and represent an ideal host matrix for optically active dopants. Due to their lower phonon energies compared...
“…37 In another work, Zhang et al fabricated BCN films with large carbon stoichiometric range using PLD with BN-N sources. 95 Huang et al developed a facile carbon-doping pyrolysis synthesis method to produce BCN nanosheets. In brief, the mixture containing glucose, boron oxide and urea was put into a tube furnace in an ammonia atmosphere for 5 h at 1250 ºC.…”
Section: Bcn and Other Types Of Ternary 2d Materialsmentioning
The synthesis, structure, characterization, physical properties and applications of different kinds of ternary 2D materials are systematically summarized and further discussed.
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