Patent ID: 9562287
Date: 2017-02-07
CPC Classifications: C23C

Claim:
1. A method for producing a high-quality and highly crystalline hexagonal boron nitride film for electronic materials, comprising: mixing a borazine oligomer with an organic solvent to form a boron nitride precursor solution; aging the precursor solution at a temperature ranging from −24° C. to −36° C. to adjust the viscosity thereof; coating the boron nitride precursor solution onto a substrate; and carrying out phase transfer of the borazine oligomer in the coated boron nitride precursor solution to produce a hexagonal boron nitride film on the substrate, wherein the substrate in said coating is a metal catalyst substrate, wherein said phase transfer is carried out by using thermal energy through heat treatment at 1000-1100° C., wherein the metal catalyst substrate is a metal foil, and wherein the metal catalyst substrate has a thickness of 100 nm to 40 μm.