Recent developments in SiC-based visible emitters

In recent years, there has been rapidly growing interest and progress in the development of blue and pure green light emitting materials for LED and laser applications. Most recent developments have been reported for the direct bandgap materials, ZnSe and GaN. However, a compatible substrate is needed for nitride-based emitters to become commercially viable. Although less efficient, the commercial viability of SiC-based LEDs has already been proven. This paper reports on the most recent advancements in increasing the performance of blue and green light emitting diodes fabricated in homoepitaxial 6H-SiC and the potential for SiC-nitride based LEDs