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Cascaded active regions in 2.4 μm GaInAsSb light-emitting diodes for improved current efficiency

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6 Author(s)
Prineas, J.P. ; Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242 and Optical Science and Technology Center, University of Iowa, Iowa City, Iowa 52242 ; Olesberg, J.T. ; Yager, J.R. ; Cao, C.
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By cascading multiple GaInAsSb active regions, the authors have fabricated 2.4 μm light-emitting diodes that, for a given light output, operate at reduced current and higher voltage, which can be advantageous for battery-powered sensor applications. Tunnel heterojunctions separating emission regions add no measurable series resistance. Devices are demonstrated at room temperature with continuous wave output.

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Applied Physics Letters  (Volume:89 ,  Issue: 21 )