Carbide LED production soon stopped when a different material, gallium nitride, showed ten–a hundred times brighter emission. This difference in efficiency is mainly because of the unfavorable indirect bandgap of SiC, whereas GaN provides a direct bandgap which favors light emission. This is often possible because they have a larger https://www.quora.com/profile/Trevor-Flatcher-2/Prospects-for-Silicon-Carbide-in-Solar-Cells-Silicon-Carbide-SiC-has-emerged-as-a-promising-material-for-enhancing-th