Patent ID: 8529699

Claim:
A method of growing a zinc-oxide-based semiconductor layer on a substrate by an MOCVD method, using water vapor and a metalorganic compound not containing oxygen, comprising: (a) performing crystal growth at a low growth temperature and at a low growth pressure in a range of 1 kPa to 30 kPa to form a low-temperature grown single-crystal layer; and (b) performing crystal growth at a high growth temperature and at a pressure higher than said low growth pressure to form a high-temperature grown single-crystal layer on said low-temperature grown single-crystal layer, wherein said low-temperature grown single-crystal layer is a zinc oxide (ZnO) layer, and said high-temperature grown single-crystal layer is a Mg x Zn (1-x) O layer, where 0≦x≦0.43, and wherein in said (b) performing crystal growth to form said high-temperature grown single-crystal layer, an impurity is doped after a thickness of the grown layer becomes greater than 1 μm.