A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2013; you can also visit the original URL.
The file type is
We report a comprehensive photoluminescence excitation ͑PLE͒ investigation of the deep iron acceptor in hexagonal GaN. PLE spectra of the Fe 3ϩ ͓ 4 T 1 ͑G͒-6 A 1 ͑S͔͒ luminescence in semi-insulating GaN samples reveal intracenter excitation processes via excited states of the Fe 3ϩ center. Zero-phonon lines resolved around 2.01 and at 2.731 eV are attributed to the 6 A 1 ͑S)-4 T 2 (G) and the 6 A 1 (S)-4 E(G) transition, respectively. A steplike excitation structure on the low-energy onset ofdoi:10.1103/physrevb.55.4382 fatcat:kx4ej4y2ojen3i666en3zqcjzm