Spectroscopic studies of the infrared emission from Tm doped Al _x Ga _{1– x} N thin films

Spectroscopic characterization of Praseodymium doped Gallium Nitride powder prepared by a Na flux method

“…At room temperature, the exponential decay component decreased slightly to values of ∼26 s and ∼20 s for above-and below-gap pumping, respectively. The slight temperature dependence of the exponential decay component can be explained by the onset of weak non-radiative decay through multi-phonon emission and/or energy transfer to defects [30]. Further studies on the red PL quenching mechanisms in GaN:Pr powders are still in progress.…”