Patent ID: 9705287
Date: 2017-07-11
CPC Classifications: H01L,H01S

Claim:
1. A method of growing, using metal organic vapor phase epitaxy (MOVPE), a uniform p type III-V group nitride semiconductor layer on a substrate directly or with a single or a plurality of intermediate layers being provided therebetween, the method comprising the steps of: (a) growing a layer consisting of 5 to 7 molecular layers of III-group atoms by supplying a III-source gas during a first time period; (b) growing a carbon-doped layer consisting of 5 to 7 molecular layers of V-group atoms by supplying a V-source gas during a second time period separate from the first time period and supplying a carbon source gas as a p type dopant during a time period that overlaps and is shorter than the second time period, alternately repeating the step of (a) and the step of (b), wherein: the substrate is either a sapphire substrate, a silicon substrate, a silicon carbide substrate, a gallium nitride substrate or an aluminum nitride substrate; and the substrate has a main surface having an offset angle in a range of +/−0.1% with respect to a C-plane or a crystal plane equivalent to the C-plane.