In situ chemical vapor deposition of graphene and hexagonal boron nitride heterostructures

Wu, Qinke; Wongwiriyapan, Winadda; Park, Jihoon; Park, Sangwoo; Jung, Seong Jun; Jeong, Taehwan; Lee, Sungjoo; Lee, Young Hee; Song, Young Jae

doi:10.1016/j.cap.2016.04.024

Cited by 47 publications

(11 citation statements)

References 98 publications

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“…The chemical composition and chemical state of the samples were investigated by using XPS technique. The wide scan XPS spectra for the h-BNC in Figure 5(a) present four peaks at 196.1, 291.8, 409.7, and 540.1 eV assigned to B1s, C1s, N1s, and O1s, respectively [19][20][21][22][23][24][25]. The atomic percentage (At%) of B1s, N1s, and C1s was recorded as 36.1%, 28.4%, and 20.0%, respectively.…”

Section: Resultsmentioning

confidence: 99%

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A h-BCN for Electrochemical Sensor of Dopamine and Uric Acid

Liu

et al. 2020

Journal of Nanomaterials

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A hexagonal boron carbon nitride hybrid (h-BCN) is developed by in situ high-temperature solid-state reaction and subsequent chemical reduction with hydrazine. The XRD and TEM results show that the h-BCN features interlayered structures with two characteristic d-spacing of 0.33 and 0.21 nm. The obtained h-BCN exhibits significant electrochemical sensor for dopamine and uric acid. The cyclic voltammetric and amperometric experiments revealed a good linear relationship between current densities and concentrations of dopamine (DA) of 10-300 μM and uric acid (UA) of 10-500 μM, with high sensitivities of 0.14 μA/μM and 0.32 μA/μM and detection limits of 5 μM and 2 μM, respectively.

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Section: Resultsmentioning

confidence: 99%

“…One kind is an alloyed BCN by substitution of C in graphene by B and N [18,19]. The other is alloying BN and graphene in the phase-segregated BCN in which BN (graphene) retains its own phase and separated by graphene (BN) [20][21][22]. Depending on the growth process, different types of alloying are possible.…”

Section: Introductionmentioning

confidence: 99%

A h-BCN for Electrochemical Sensor of Dopamine and Uric Acid

Liu

et al. 2020

Journal of Nanomaterials

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“…H-BN is an insulator with a 5.9 eV bandgap [ 7 , 8 ]. Graphene and h-BN have similar atomic configurations and lattice parameters, and the lattice mismatch between them is less than 2% [ 9 , 10 , 11 ]. The formation of graphene/h-BN in-plane heterostructures not only opens the band gap of graphene but also has the effect of modulating the intrinsic properties of graphene [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Near-Interface Defects in Graphene/H-BN In-Plane Heterostructures: Insights into the Interfacial Thermal Transport

Zhou

et al. 2022

Nanomaterials

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Based on nonequilibrium molecular dynamics (NEMD) and nonequilibrium Green’s function simulations, the interfacial thermal conductance (ITC) of graphene/h-BN in-plane heterostructures with near-interface defects (monovacancy defects, 585 and f5f7 double-vacancy defects) is studied. Compared to pristine graphene/h-BN, all near-interface defects reduce the ITC of graphene/h-BN. However, differences in defective structures and the wrinkles induced by the defects cause significant discrepancies in heat transfer for defective graphene/h-BN. The stronger phonon scattering and phonon localization caused by the wider cross-section in defects and the larger wrinkles result in the double-vacancy defects having stronger energy hindrance effects than the monovacancy defects. In addition, the approximate cross-sections and wrinkles induced by the 585 and f5f7 double-vacancy defects provide approximate heat hindrance capability. The phonon transmission and vibrational density of states (VDOS) further confirm the above results. The double-vacancy defects in the near-interface region have lower low-frequency phonon transmission and VDOS values than the monovacancy defects, while the 585 and f5f7 double-vacancy defects have similar low-frequency phonon transmission and VDOS values at the near-interface region. This study provides physical insight into the thermal transport mechanisms in graphene/h-BN in-plane heterostructures with near-interface defects and provides design guidelines for related devices.

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“…Implementing quantum dots could lead to tuning the C 3 N as a semiconductor 4 . Due to the appearance of new properties and their several applications, 2D hybrid materials have been studied by many researchers 5 – 8 . Recent experimental and theoretical studies focused on the thermal, elastic, electronic, and thermoelectric properties of the C 3 N, BC 3, and C 3 N/BC 3 interface 7 , 9 – 15 .…”

Section: Introductionmentioning

confidence: 99%

Hypersonic impact properties of pristine and hybrid single and multi-layer C3N and BC3 nanosheets

Molaei

Eshkalak

Sadeghzadeh

et al. 2021

Sci Rep

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Carbon, nitrogen, and boron nanostructures are promising ballistic protection materials due to their low density and excellent mechanical properties. In this study, the ballistic properties of C3N and BC3 nanosheets against hypersonic bullets with Mach numbers greater than 6 were studied. The critical perforation conditions, and thus, the intrinsic impact strength of these 2D materials were determined by simulating ballistic curves of C3N and BC3 monolayers. Furthermore, the energy absorption scaling law with different numbers of layers and interlayer spacing was investigated, for homogeneous or hybrid configurations (alternated stacking of C3N and the BC3). Besides, we created a hybrid sheet using van der Waals bonds between two adjacent sheets based on the hypervelocity impacts of fullerene (C60) molecules utilizing molecular dynamics simulation. As a result, since the higher bond energy between N–C compared to B-C, it was shown that C3N nanosheets have higher absorption energy than BC3. In contrast, in lower impact speeds and before penetration, single-layer sheets exhibited almost similar behavior. Our findings also reveal that in hybrid structures, the C3N layers will improve the ballistic properties of BC3. The energy absorption values with a variable number of layers and variable interlayer distance (X = 3.4 Å and 4X = 13.6 Å) are investigated, for homogeneous or hybrid configurations. These results provide a fundamental understanding of ultra-light multilayered armors' design using nanocomposites based on advanced 2D materials. The results can also be used to select and make 2D membranes and allotropes for DNA sequencing and filtration.

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In situ chemical vapor deposition of graphene and hexagonal boron nitride heterostructures

Cited by 47 publications

References 98 publications

A h-BCN for Electrochemical Sensor of Dopamine and Uric Acid

A h-BCN for Electrochemical Sensor of Dopamine and Uric Acid

Near-Interface Defects in Graphene/H-BN In-Plane Heterostructures: Insights into the Interfacial Thermal Transport

Hypersonic impact properties of pristine and hybrid single and multi-layer C3N and BC3 nanosheets

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