Patent ID: 7955881
Filing Date: 2011-06-07
Classification: H01L

Abstract:
1. A method of fabricating a quantum well structure, the quantum well structure including a well layer and a barrier layer, the method comprising the steps of: growing the well layer at a first temperature on a substrate, the well layer comprising a group III nitride semiconductor, and the group III nitride semiconductor containing indium as a constituent; growing an intermediate layer on the well layer while monotonically increasing a substrate temperature from the first temperature, the intermediate layer comprising a group III nitride semiconductor, the group III nitride semiconductor of the intermediate layer having a band gap energy larger than that of the well layer, and a thickness of the intermediate layer being greater than 1 nm and less than 3 nm in thickness; and growing the barrier layer on the intermediate layer while keeping the substrate temperature at a second temperature higher than the first temperature, the barrier layer comprising a group III nitride semiconductor, and the group III nitride semiconductor of the barrier layer having a band gap energy larger than the band gap energy of the well layer.