Patent ID: 11885039
Assignee: THE HONG KONG POLYTECHNIC UNIVERSITY
Field: Semiconductors (Electrical engineering)
Classification: CPC C  H  B | IPC C  H

Claim 9:
10. The method of claim 1, wherein the method comprises:
a. positioning the substrate in the process chamber, wherein the substrate comprises a deposition surface;
b. positioning a black phosphorus single crystal target in the process chamber between 20-55 mm from the substrate; and
c. focusing the pulsed laser beam having a laser fluence between 0.8-1.6 J/cm2 on the black phosphorus single crystal target to ablate the black phosphorous single crystal target thereby forming a plume comprising phosphorus plasma directed towards the deposition surface thereby forming the monolayer or few-layer crystalline black phosphorus film, wherein the pressure of the process chamber is maintained between 1.0×10−10 Torr and 1.0×10−5 Torr.