Patent ID: 9142717
Filing Date: 2015-09-22
Classification: B82Y,H01L,H01S

Abstract:
1. A semiconductor light emitting device, comprising: a foundation layer including a nitride semiconductor, the foundation layer having a dislocation density not more than 5×10 a first semiconductor layer of a first conductivity type provided on the foundation layer and including a nitride semiconductor; a light emitting part provided on the first semiconductor layer, the light emitting part including: a second semiconductor layer of a second conductivity type different from the first conductivity type, provided on the light emitting part and including a nitride semiconductor, a light emission efficiency of the device having a maximum efficiency value at a first current value of a current flowing between the first semiconductor layer and the second semiconductor layer, the light emission efficiency of the device having a second efficiency value at a second current value of the current, the second current value being ten times the first current value, and the second efficiency value being not less than 82% of the maximum efficiency value.