晶体照片：

Product Description：

  World's largest size h-BN crystals are available! Our h-BN crystals now measure 5-6 mm in size much comparable to other traditional layered crystals. After 3 years of research  and engineering, our team has developed state-of-the-art h-BN growth technique (Epitaxial solidification technique? patent pending) to synthesize these large size crystals. In this growth technique, boron and nitrogen elements are first dissolved in our secret metal alloy liquids formula at high temperatures (T>2200C) in RF coils under controlled pressure / environment. Once the precursors are dissolved, the temperature is carefully reduced at designed rates to reject B and N atoms slowly. During the rejection B and N atoms epitaxially bind to seed high quality h-BN crystals to achieve large size h-BN crystals. Once the growth is complete special care is given to purification to ensure 6N purity h-BN crystals with sharp Raman spectra, excellent diffraction pattern, and easy exfoliation characteristics. Since the crystals are large, the exfoliation process is rather simple and monolayers as large as 50-100 um can be achieved using standard exfoliation techniques. 

Each order contains three or more crystals that measure <5mm in size. If your research needs even larger size h-BN crystal (8-9mm) please reach to us. Our team can arrange dedicated growth to achieve such sizes.

Advantages of epitaxial solidifcation technique h-BN growth 

• World record size hBN crystals. Reaching 5mm! The first in the commercial market
• Large exfoliated h-BN monolayers. Excellent layered nature and easy exfoliation characteristics enabling getting large monolayer sheets using simple exfoliation
• High purity. Unmatched 6N (99.9999%) secondary ion mass spectroscopy (SIMS) confirmed h-BN crystals.
• Electronic and optical grade. No mid-gap defects

The properties of large size h-BN crystals

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