Patent ID: 9064791
Filing Date: 2015-06-23
Classification: H01L

Abstract:
1. A method for producing a p-type ZnO based compound semiconductor layer comprising the steps of (a) supplying (i) Zn, (ii) O, (iii) optionally Mg, and (iv) a Group 11 element which is Cu and/or Ag to form a Mg (b) supplying at least one Group 13 element selected from the group consisting of B, Ga and Al on the Mg wherein supplying Zn is carried out in an open period of a Zn cell shutter, supplying O is carried out in an open period of an O cell shutter, supplying at least one of B, Ga or Al is carried out in an open period of at least one of a B, Ga or Al cell shutter and supplying Cu and/or Ag is carried out in an open period of a Cu and/or Ag cell shutter, and wherein the open period of the Zn cell shutter includes the open period of the O cell shutter and the open period of the Cu and/or Ag cell shutter, and does not include the open period of the at least one of the B, Ga or Al cell shutter; and the open period of the O cell shutter or the open period of the Cu and/or Ag cell shutter does not coincide with a beginning of the open period of the Zn cell shutter and an ending of the open period of the Zn cell shutter; (c) alternately carrying out the steps (a) and (b) to form a laminate structure; and (d) annealing the laminate structure to form a p-type Mg