Hexagonal boron nitride (h-BN) is a two-dimensional compound with many applications. It is a structural type of boron nitride ceramics, the other two types are cubic-BN and wurtzite-BN. This article is going to focus on HBN used as a substrate for 2D materials.
2DM refers to two-dimensional material in that all the atoms are set together within a single layer. From the micro perspective, 2DM are nanoscale materials. 2DM can be classified as elements, metallic compounds, organics, and salts. All these materials have impressive mechanical, chemical, and optical properties.
2D materials have various advantages compared with bulk materials.
Geim, A., Grigorieva, I. Van der Waals heterostructures. Nature 499, 419–425 (2013). https://doi.org/10.1038/nature12385
There is a range of production methods to get this single-layer material from bulk materials.
Chemical vapor deposition has become a prime manufacturing means recently. Related reading: 2D Materials: Rising Star for Future
Hexagonal boron nitride is a stable compound. Similar to its counterpart graphite, h-BN has a single two-dimension layer. Additionally, all the boron atoms and nitride atoms are held together by weak van der Waals forces instead of strong covalent bonds. Hexagonal boron nitride has many other outstanding features:
With these notable properties, hexagonal boron nitride found many applications in electronics, batteries, thermal applications, and other sectors.
Hexagonal boron nitride structure
As we mentioned above, chemical vapor deposition is a commonly used method to make high-quality 2D materials with ideal mechanical, chemical, thermal, and optical properties. The substrate plays an essential part during the deposition process. For one thing, CVD is affected by temperatures, pressures, precursors, and other elements. For another, substrates affect the size, thickness, nucleation, and crystal quality of 2D materials. Therefore, substrates are of great importance to the synthesis of 2D materials.
SiO2/Si substrate is one of the substrates used in chemical vapor deposition to manufacture 2D materials. It is extensively employed due to the following reasons.
Hexagonal boron nitride becomes an alternative for SiO2/Si substrates recently. It has a variety of advantages over SiO2/Si.
In short, hexagonal boron nitride ceramic is an ideal choice to make substrates for 2D materials because of its single layer and remarkable stability. It has numerous advantages over SiO2/Si and other substrate materials. Advanced Ceramic Materials (ACM) provides lots of boron nitride products, and we have rich experience in the manufacturing and sales of ceramic products. Check our website for more information.
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