Patent ID: 7166869
Filing Date: 2007-01-23
Classification: B82Y,H01L,H01S

Abstract:
1. A nitride semiconductor device comprising: an active layer of a quantum well structure which has a first surface and a second surface and which comprises an indium-containing nitride semiconductor; a first layer which adjoins the first surface of the active layer and has a band gap energy larger than that of the active layer; a second layer which is a light layer and is formed on the first surface side of the active layer at a location more distant from the active layer relative to the first layer and which comprises a nitride semiconductor containing an acceptor impurity and which has a band gap energy smaller than that of the first layer; and a third layer which is formed on the first surface side of the active layer at a location more distant from the active layer relative to the second layer and which comprises a nitride semiconductor containing an acceptor impurity and which has a band gap energy larger than that of the second layer.