Observation of sharp emission lines from Zn-doped GaN

We report the observation and characterization of sharp emission lines from Zn-related emission centers in GaN. Initial studies on the emission lines show that they appear only at low temperatures (T < 50 K), are energetically stable, and exhibit linewidths of a few meV. A brief discussion on their possible origins is given. (C) 2019 The Japan Society of Applied Physics