Apart from crystal quality, problems with the interface of SiC with silicon dioxide have hampered the development of SiC-based power MOSFETs and insulated-gate bipolar transistors. Blue light comprises high-energy photons; gallium nitride, with its wide bandgap, was the first semiconductor that could basically produce photons with the adequate energy. In https://www.quora.com/profile/Trevor-Flatcher-2/Exploration-of-Silicon-Carbide-Application-in-Friction-Materials-https-iflatiron-com-exploration-of-silicon-carbide-a