Low 1c screw dislocation 3 inch silicon carbide wafer

Single-crystal – oriented-crystal – and epitaxy growth processes; – Forming from vapor or gaseous state – Fully-sealed or vacuum-maintained chamber

Reexamination Certificate

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C438S745000

Reexamination Certificate

active

07314520

ABSTRACT:
A high quality single crystal wafer of SiC is disclosed having a diameter of at least about 3 inches and a 1 c screw dislocation density of less than about 2000 cm−2.

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