We report the observation of efficient mid-infrared electroluminescence associated with internal transitions of Fe2+ deep levels in overcompensated n-type InP:Fe, ion implanted with Fe doses in the range 1013-1015 cm-2. Unprecedented high active Fe2+ densities up to ∼1018 cm-3 are obtained with a combination of high temperature implantation and annealing procedure. The characteristic spectrum of Fe2+, dominated by a set of sharp lines corresponding to the symmetry allowed d-shell transitions, can be observed up to 30 K. A broader emission is detectable up to 200 K. The estimated conversion efficiency of electrical into mid-infrared optical power is ∼5 × 10-5, a factor of ∼50 larger than previously reported value in MOCVD-grown planar electroluminescent devices. © 2001 Elsevier Science B.V.
Troccoli, M., Mazzone, A., Scamarcio, G., Fraboni, B., Priolo, F., Gasparotto, A. (2001). Mid-infrared (3.5 μm) electroluminescence from heavily Fe2+ ion-implanted semi-insulating InP. OPTICAL MATERIALS, 17(1-2), 189-191 [10.1016/S0925-3467(01)00080-5].
Mid-infrared (3.5 μm) electroluminescence from heavily Fe2+ ion-implanted semi-insulating InP
Fraboni B.;
2001
Abstract
We report the observation of efficient mid-infrared electroluminescence associated with internal transitions of Fe2+ deep levels in overcompensated n-type InP:Fe, ion implanted with Fe doses in the range 1013-1015 cm-2. Unprecedented high active Fe2+ densities up to ∼1018 cm-3 are obtained with a combination of high temperature implantation and annealing procedure. The characteristic spectrum of Fe2+, dominated by a set of sharp lines corresponding to the symmetry allowed d-shell transitions, can be observed up to 30 K. A broader emission is detectable up to 200 K. The estimated conversion efficiency of electrical into mid-infrared optical power is ∼5 × 10-5, a factor of ∼50 larger than previously reported value in MOCVD-grown planar electroluminescent devices. © 2001 Elsevier Science B.V.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
