title: Yellow luminescence of gallium nitride generated by carbon defect complexes.
abstract: We demonstrate that yellow luminescence often observed in both carbon-doped and pristine GaN is the result of electronic transitions via the C(N)-O(N) complex. In contrast to common isolated defects, the C(N)-O(N) complex is energetically favorable, and its calculated optical properties, such as absorption and emission energies, a zero phonon line, and the thermodynamic transition level, all show excellent agreement with measured luminescence data. Thus, by combining hybrid density functional theory and experimental measurements, we propose a solution to a long-standing problem of the GaN yellow luminescence.
authors.affiliation: Department of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, USA.
authors.forename: D O
authors.initials: DO
authors.lastname: Demchenko
authors.forename: I C
authors.initials: IC
authors.lastname: Diallo
authors.forename: M A
authors.initials: MA
authors.lastname: Reshchikov