公开(公告)号：US20230374695A1

公开(公告)日：2023-11-23

申请号：US18199285

申请日：2023-05-18

Applicant: NS Nanotech, Inc.

Inventor： Evrard LACROIX ,  Seth COE-SULLIVAN ,  Matthew STEVENSON ,  David LALEYAN

IPC: C30B9/06 ,  C30B9/10 ,  C30B29/40

CPC classification number: C30B9/06 ,  C30B9/10 ,  C30B29/403

Abstract: To produce hexagonal boron nitride (h-BN), boron and nitrogen are added to a metallic solvent in a crucible in a reaction chamber and heat-treated. In an absorption step, a first soak is performed at a first temperature that is high enough to cause absorption of the nitrogen and boron into the metallic solvent. In a nucleation step after the absorption step, the first temperature is rapidly reduced to a second temperature, and h-BN nuclei are formed in the metallic solvent. In a growth step after the nucleation step, a second soak is performed at the second temperature to grow the h-BN nuclei. After the growth step, the h-BN nuclei are separated from the metallic solvent.