Aluminium nitride (AlN) is a nitride of aluminium. Its wurtzite phase (w-AlN) is a wide band gap (6.2 eV) semiconductor material, giving it potential application for deep ultraviolet optoelectronics.

For a typical sample of AlN the refractive index and extinction coefficient at 632.8 nm are 2.16468 and 0. Below are files of complete refractive index and extinction coefficients. If the file is not available for download, you can request our proprietary file by clicking "Request".

Refractive Index Reference - Optical constants of crystalline and amorphous semiconductors, Adachi, pg 150

No guarantee of accuracy - use at your own risk.