Hexagonal boron nitride (hBN) is a unique refractory material renowned for its outstanding thermomechanical, dielectric and transparency properties. Although analogous to all-carbon graphene, hBN products have a dielectric strength greater than refractory alumina (Al2O3) and a wide band gap in the region of 5.97 eV. This explains the material’s transparency when deposited in single- or few-layer sheets onto many working substrate materials.
In this post, we highlight the hBN products available from Grolltex.
hBN Sheets on Copper Foil
We provide chemical vapor deposition (CVD) generated hBN monolayer films on 25 micron-thick (μm) copper foils of either 3” x 3” or 6” x 6”, with at least 95% coverage of the substrate material. Sporadic adlayers may form during processing, which are mapped and measured via Raman spectroscopy for each batch as part of our proprietary quality assurance and control (QA/QC) procedures. Our monolayer hBN sheets feature a maximum grain size of 4 μm, which is also confirmed via Raman measurements. All our QA/QC data is available on request, providing total confidence in our hBN products.
hBN Products with Silicon
Silicon remains a popular transfer target material of choice for CVD generated hBN. We offer single-layer hBN on silicon wafers of 4”, 6”, and 8” diameters with 95% coverage, transferred on to industry standard bare Si/SiO2 as sourced from a reliable, conventional supplier.
Monolayer hBN on Custom Substrates
We also have the capacity to transfer high-quality single-layer hBN on to custom substrate materials, providing these target substrates are planar and have good surface roughness characteristics. Variable wafer chemistry and topography can present challenges, but most transfers provide good results and we have not had a dissatisfied customer yet. We are happy to discuss the viability of custom substrate materials for transfer of CVD-generated hBN monolayers and we conduct all such business on a best-effort basis.
hBN Products from Grolltex
Grolltex is a world leader in CVD generation of monolayer materials such as graphene, hBN, and composites of the two. We fabricate all our graphene and hBN products in a Class 1000 cleanroom and package them in double vacuum wrapped envelopes, adhering to the strictest QA/QC protocols to guarantee the highest quality materials at a reasonable price. Contact us with any questions about CVD generated graphene or hBN.