Twin structures of rhombohedral and cubic boron nitride prepared by chemical vapor deposition method

Oku, Takeo; Hiraga, Kenji; Matsuda, T.; Hirai, Toshio; Hirabayashi, Makoto

doi:10.1016/s0925-9635(02)00329-1

Cited by 61 publications

(29 citation statements)

References 19 publications

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“…2,3) Boron nitride (BN) nanostructured materials with a bandgap energy of $6 eV and non-magnetism are also expected to show various electronic, optical and magnetic properties such as Coulomb blockade, photoluminescence, and supermagnetism. 4,5) Recently, several studies have been reported on BN nanomaterials such as BN nanotubes, [6][7][8] BN clusters, 9,10) BN nanocapsules 4,5,11) and BN nanoparticles, 12,13) which are expected to be useful as electronic devices, high heatresistance semiconductors and insulator lubricants. In addition, some BN nanohorns as a novel type of BN nanotubes were also reported by HREM images.…”

Section: Introductionmentioning

confidence: 99%

Growth of Boron Nitride Nanohorn Structures

2008

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Section: Introductionmentioning

confidence: 99%

Growth of Boron Nitride Nanohorn Structures

2008

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“…Boron nitride (BN) nanostructured materials with a bandgap energy of w6 eV and non-magnetism are also expected to show various electronic, optical and magnetic properties such as Coulomb blockade, photoluminescence, and supermagnetism [4]. Several studies have reported on BN nanomaterials such as BN nanotubes [4,5], BN nanocapsules [4], BN nanoparticles [6,7] and BN clusters [3,4], which are expected to be useful as electronic devices, high heat-resistance semiconductors, nanocables, insulator lubricants and gas storage materials.…”

Section: Introductionmentioning

confidence: 99%

Formation and atomic structure of B₁₂N₁₂nanocage clusters studied by mass spectrometry and cluster calculation

Oku¹,

Nishiwaki²,

Narita³

2004

Science and Technology of Advanced Materials

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Boron nitride (BN) nanocage clusters of B 12 N 12 were synthesized, and detected by laser desorption time-of-flight mass spectrometry. The B 12 N 12 clusters consisted of 4-and 6-membered BN rings satisfying the isolated tetragonal rule, which was optimized by molecular orbital calculations. The electronic structure showed a bandgap energy of 5.1 eV, which is a little smaller than that of B 36 N 36 cluster. q

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“…r-BN predominates over h-BN, which may be due to the influence of monovalent anions in the synthetic environment. [13,14] In summary, highly crystalline r-BN nanoplates with regular triangular shapes have been produced on a large scale by means of a metal-catalyzed route. NaNH 2 and metallic Ni play an important role in high-yield generation of r-BN triangular nanoplates.…”

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High‐Yield Synthesis of Rhombohedral Boron Nitride Triangular Nanoplates

Zhan

et al. 2007

Advanced Materials

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Synthesis of nanometer-scale materials with controlled size and morphology has attracted prime attention in nanomaterials research owing to the nanostructural morphology-dependent physical properties.[1] In addition to zero-dimensional (0D) quantum dots and 1D nanorods (or nanowires), [2] there have been a few examples of 2D elemental and compound nanostructures, such as Ag, Au, Pd, LnF 3 , Bi 2 Te 3 , Sb 2 Te 3 , In 2 S 3 , CdS, NiS, and ZnO nanoplates. [3,4] Boron nitride has attracted continuous attention over the last three decades. Owing to its good mechanical, thermal, and chemical properties, BN is a widely used material in vacuum technology. It has also been employed in microelectronic devices, for X-ray lithography masks and as a wear-resistant lubricant.[5] Similar to carbon, BN can form sp 2 -bonded hexagonal BN (h-BN) and rhombohedral BN (r-BN) or sp 3 -bonded wurtzite BN (w-BN) and cubic BN (c-BN). In contrast to graphite, which exhibits a semimetallic behavior, all BN forms have a wide bandgap, which makes BN a promising candidate for deep-blue and UV applications.[6] BN nanostructures with a well-defined geometry and highly crystalline nature, such as 1D nanotubes, can be obtained using hightemperature chemical vapor deposition (CVD) (above 1600°C). [7] In the present Communication, we demonstrate a metal-assisted technique for the high-yield synthesis of r-BN triangular nanoplates and present a thorough analysis of their morphological and structural characteristics. The BN nanoplates with a unique triangular shape and wide bandgap will promote their successful integration into modern nanoelectronic and photonic devices.The reaction between NaNH 2 and NH 4 BF 4 in the presence of nickel sponge in a closed autoclave resulted in a white-colored product, which was identified by X-ray diffraction (XRD) as predominantly r-BN (Joint Committee on Powder Diffraction Standards (JCPDS) card 45-1171) (Fig. 1a). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images indicate that the product is composed of triangular nanoplates. The nanoplates are generally 100-300 nm wide and ca. 20 nm thick. The particle-size laser analysis indicated that the size distribution is mainly around 250 nm (see Supporting Information, SI-1d). The larger particles possibly originate from agglomeration of nanoplates in ethanol solution. According to SEM and TEM examination, the yield of triangular plates was over 90 vol %. Some truncated and broken nanoplates were occasionally observed. Figure 1b presents

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Twin structures of rhombohedral and cubic boron nitride prepared by chemical vapor deposition method

Cited by 61 publications

References 19 publications

Growth of Boron Nitride Nanohorn Structures

Growth of Boron Nitride Nanohorn Structures

Formation and atomic structure of B₁₂N₁₂nanocage clusters studied by mass spectrometry and cluster calculation

High‐Yield Synthesis of Rhombohedral Boron Nitride Triangular Nanoplates

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Twin structures of rhombohedral and cubic boron nitride prepared by chemical vapor deposition method

Cited by 61 publications

References 19 publications

Growth of Boron Nitride Nanohorn Structures

Growth of Boron Nitride Nanohorn Structures

Formation and atomic structure of B12N12nanocage clusters studied by mass spectrometry and cluster calculation

High‐Yield Synthesis of Rhombohedral Boron Nitride Triangular Nanoplates

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Formation and atomic structure of B₁₂N₁₂nanocage clusters studied by mass spectrometry and cluster calculation