Patent ID: 9322110
Filing Date: 2016-04-26
CPC Classification: C30B

Claim Text:
1. A method of growing a vanadium-doped SiC single crystal by sublimation comprising: (a) providing a growth crucible having SiC source material and a SiC single crystal seed in spaced relation therein; (b) heating the growth crucible of step (a) to a temperature between 2000° C. and 2400° C. causing the SiC source material to sublime; (c) forming a temperature gradient between the SiC source material and the SiC single crystal seed that causes the sublimated SiC source material to be transported to and precipitate on the SiC single crystal seed thereby growing a SiC crystal on the SiC single crystal seed; and (d) concurrent with step (c), introducing into the growth crucible from a location outside the growth crucible a doping gas mixture that includes a gaseous vanadium chemical compound that, in response to entering the growth crucible heated to the temperature between 2000° C. and 2400° C., undergoes thermal dissociation, chemical reduction, or both, releasing into the growth crucible gaseous dissociation products, reduction products, or both which are absorbed on a growth interface of the growing SiC crystal thereby doping the growing SiC crystal with vanadium.