Patent ID: 8329252

Claim:
A chemical vapor deposition method for growth of SiC, said method comprising: supplying original species SiH4 and CCl4 into a growth chamber; decomposing at elevated temperatures in said growth chamber; producing decomposition product SiH2, SiH, Si, CCl3, or CCl2 in said growth chamber; producing interaction product HCl, CH3Cl, CH4, or SiH2Cl2 in said growth chamber, as byproducts of said original species SiH4 and CCl4; etching by one of said byproducts HCl in said growth chamber to suppress Si nucleation; providing main species SiCl2 and CH4 at a cooled insert located on sides of a substrate holder and at a shower-head located on top of said substrate holder, in said growth chamber; wherein said shower-head is backed by a graphite insert; wherein said cooled insert shields heat in said growth chamber; wherein said cooled insert is made of graphite; wherein Si to C atom ratio is between 0.7 and 1.3; wherein Si to Cl atom ratio is between 0.02 and 1.5; wherein parasitic deposits on susceptor, reactor walls, and injector system are suppressed; depositing SiC on a substrate located on said substrate holder at a growth substrate temperature range of 1500 to 1800 centigrade.