Photoluminescent Properties of Se-doped GaN

Abstract

The nature of Se donors in GaN was investigated using temperature dependent photoluminescence spectroscopy. Near-bandedge emission of the doped films was investigated at temperatures between 15-300 K. Based on the temperature dependence of the near-bandedge emission, the Se donor level in GaN was estimated to be 38 +/- 4 meV below the conduction band minimum.