Patent ID: 9096947
Filing Date: 2015-08-04
Classification: C30B,H01L,Y10T

Abstract:
1. A method for producing an SiC single crystal, having the following constitution: (a) the method for producing an SiC single crystal repeats an a-plane growth step n (n≧2) times; (b) a first a-plane growth step is a step for carrying out the a-plane growth of an SiC single crystal on a first growth plane by using a first seed crystal having the first growth plane with an offset angle from the {0001} plane of 80° to 100°; (c) a k-th a-plane growth step (2≦k≦n) is a step for cutting out a k-th seed crystal having a k-th growth plane with a growth direction 45° to 135° different from the growth direction of a (k−1)-th a-plane growth step and an offset angle from the {0001} plane of 80° to 100° from a (k−1)-th grown crystal obtained in the (k−1)-th a-plane growth step, and carrying out the a-plane growth of an SiC single crystal on the k-th growth plane; and (d) the k-th a-plane growth step (1≦k≦n) is a step for carrying out the a-plane growth of an SiC single crystal on the k-th growth plane so that an area ratio S where S