Patent ID: 9449815
Filing Date: 2016-09-20
CPC Classification: H01L

Claim Text:
1. A method of growing gallium nitride-based semiconductor layers through metal-organic chemical vapor deposition, the method comprising: disposing a substrate in a chamber; growing a first conductivity-type gallium nitride-based semiconductor layer on the substrate at a first chamber pressure that is more than 100 Torr and less than or equal to 300 Torr; growing a superlattice layer directly on the first conductivity-type gallium nitride-based semiconductor layer, and growing the superlattice layer comprises: growing a gallium nitride-based active layer on the first conductivity-type gallium nitride-based semiconductor layer at a second chamber pressure that is higher than the first chamber pressure, and growing the gallium nitride-based active layer comprises: growing a second conductivity-type gallium nitride-based semiconductor layer on the active layer at a third chamber pressure that is lower than the second chamber pressure, wherein the second and third chamber pressures are lower than 760 Torr.