Patent ID: 7488971
Filing Date: 2009-02-10
Classification: B82Y,H01L,H01S

Abstract:
1. A nitride semiconductor product comprising an n-type layer, a light-emitting layer, and a p-type layer which are formed of a nitride semiconductor and sequentially stacked on a substrate in the above order, said light-emitting layer having a quantum well structure in which a well layer is sandwiched by barrier layers having band gaps wider than the band gap of the well layer, wherein said barrier layers individually comprise a barrier sublayer C which has been grown at a temperature higher than a growth temperature of said well layer, and barrier sublayers A, B and E which have been grown at a temperature lower than a growth temperature of said barrier sublayer C, said barrier sublayers A, B, C, and E are stacked, in this order, said barrier sublayer A is grown by maintaining a temperature lower than a growth temperature of said barrier sublayer C, said barrier sublayer B is grown during elevating a temperature from the growth temperature of said barrier sublayer A to the growth temperature of said barrier sublayer C, the difference between the growth temperature of said barrier sublayer C and the growth temperature of said barrier sublayer E is 50°C. or more, said barrier sublayer E is grown by maintaining the lowered growth temperature after lowering the temperature.