The only highwide bandgap materials in [[Carbon group|group IV]] are [[diamond]] and [[silicon carbide]] (SiC).
There are many III–V and II–VI compound semiconductors with highwide bandgaps. In the III-V semiconductor family, [[aluminium nitride]] (AlN) is used to fabricate [[ultraviolet]] [[LED]]s with wavelengths down to 200–250 [[nanometre|nm]], [[gallium nitride]] (GaN) is used to make blue LEDs and [[laser diode]]s, and [[boron nitride]] (BN) is proposed for blue LEDs.
