Patent ID: 8809832

Claim:
A structure comprising: a substrate structure; a first group III-nitride layer with a first low bandgap energy formed on a surface of the substrate; a second group III-nitride layer with a first high bandgap energy formed on the first group III-nitride layer; a plurality of group III-oxide stripes formed on the second group III-nitride layer; and a plurality of group III-oxide nanowires formed on the second group III-nitride layer between the group III-oxide stripes; wherein at least some of group III-nitride nanowires with a second low bandgap energy formed on the second group III-nitride layer between the group III-oxide stripes are selectively transformed into the group III-oxide nanowires by selective photo-enhanced oxidation; and wherein the first high bandgap energy is higher than the first low bandgap energy, and the first high bandgap energy is higher than the second low bandgap energy.