Indeed, the success of GaInN in the
1990s for high-brightness blue LEDs has now led to this
being the most popular material produced by MOCVD.
The early strength of MOCVD was its ability to grow
onto different substrates but this was later abandoned
in favor of the more conventional homoepitaxy; however,
the nitrides rely on heteroepitaxy onto sapphire
and SiC substrates, bringing MOCVD back to its roots
with the early work of Manasevit. This versatility with
substrate materials presents MOCVD with the ultimate
challenge of mating high-performance optoelectronic
materials with silicon substrates in order to combine
the best of optoelectronic and electronic performance