The hexagonal crystal structure of hexagonal boron nitride (h-BN) is one of the three crystalline forms of boron nitride (BN). Due to its great chemical stability, outstanding mechanical and thermal properties, and wide bandgap, h-BN has lately become an excellent material for a range of applications, including optoelectronics, protective coatings, and transparent films. Other 2D nanomaterials, such as semiconductors and conductive materials, are commonly utilized as a support for h-BN to construct two-dimensional heterogeneous structures.
Alfa Chemistry can provide unique bespoke synthesis services for h-BN materials to customers such as the world's major R&D labs and universities because we are a pioneer in the research synthesis of 2D materials. We make h-BN materials in a number of unique and specific ways. You can take care of all your h-BN needs here, thanks to our outstanding technical processes and competitive price.
Alfa Chemistry's Capabilities
Alfa Chemistry typically uses thermal and plasma-assisted processes to grow h-BN films. Low temperature, homogeneous size, adjustable thickness, and no metal catalyst are all advantages of this approach. We can deliver custom h-BN services on a range of substrates based on customer specifications. On dielectric substrates, we successfully produced extremely crystalline h-BN nanosheets. CO2 pulsed laser plasma deposition and high purity BN targets were employed. The resulting h-BN films are made up of a large number of partially overlapping nanosheets with a random orientation.
Fig 1. Synthesis of large area h-BN film via plasma-enhanced atomic layer depostion. (Zhao J. H, et al. 2018)
The plasma can also direct the growth of nanomaterials to form a dense network of vertically aligned nanosheets. We've also used plasma-assisted techniques to make vertically aligned h-BN, which is similar to VG. We use a remote PECVD technique to create vertically aligned h-BN nanosheets on diverse substrates, including silicon and GaAs, using a mixture of cyclic borazane and ammonia.
Alfa Chemistry also offers customers an easy way to transfer monolayers of h-BN onto any substrate. All of the difficult jobs have been completed. You can use our method to transfer hexagonal boron nitride to any new substrate for testing. Please contact us if you require various sizes or specific sample custom transfer requirements.
Technical Indexes
Alfa Chemistry has a number of leading synthetic experts and chemistry Ph.D.s on staff, as well as vast R&D and manufacturing capabilities, to provide you with a variety of high-quality tailored services for 2D material research, development, and manufacture. The technical data on some of the h-BN material samples we've produced are listed below.
| Item | h-BN (A) | h-BN (B) | h-BN (C) | h-BN (D) | h-BN (E) | h-BN (F) |
|---|
| BN (%) | ≥99.0 | ≥99.0 | ≥99.0 | ≥99.0 | ≥99.0 | ≥99.0 |
| B2O3 (%) | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.3 |
| Particle Size (μm) | ~3 | ~5 | ~10 | ~14 | ~19 | ~30 |
| Appearance | White powder, medium crystallization, excellent high-temperature resistance and oxidation resistance | White powder, its particle size is similar to PTFE, the particle size is uniform | White powder, high crystallinity and more uniform particle size; thermal conductivity, insulation, lubrication, high-temperature resistance, and resistance to molten metal corrosion | White powder, high thermal conductivity, electrical insulation, low dielectric constant, low expansion coefficient, and good stability |
Reference
- Zhao J. H, et al. (2018). "Recent Progress in Plasma-Assisted Synthesis and Modification of 2D Materials." 2D Mater. 5: 032002.
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