Degradation mechanisms in group-III nitride devices

Devices fabricated in the group-III nitride material system have shown significant resistance to the types of degradation common to those encountered in the GaAs and InP -based systems. As a result, GaN-based light emitting diodes have pushed the technological limits of package technology and design for high output power. The relatively high defect densities in these materials have been shown to be a device weakness for laser applications. This paper reviews these concepts to try to give the readers an understanding of the differences between the group-III nitrides and standard III-V materials.

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