Indium nitride (InN) is a small-bandgap semiconductor material, which has potential application in solar cells[2] and high speed electronics.

Using one or more alloys of indium gallium nitride (InGaN), an optical match to the solar spectrum can be achieved.

However, there are many difficulties to be overcome if such solar cells are to become a commercial reality: p-type doping of InN and indium-rich InGaN is one of the biggest challenges.

[8] Thin polycrystalline films of indium nitride can be highly conductive and even superconductive at liquid helium temperatures.

Nevertheless, the superconductivity is attributed to metallic indium chains[8] or nanoclusters, where the small size increases the critical magnetic field according to the Ginzburg–Landau theory.