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16% external quantum efficiency from planar microcavity LEDs at 940nm by precise matching of cavity wavelength

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6 Author(s)

High efficiency substrate emitting microcavity InGaAs/(Al)GaAs 3 QW LEDs are reported. The use of regrowth for cavity resonance tuning and its effect on device performance are demonstrated. The best results obtained include external quantum efficiencies of 16%. At 5mA, 1mW of optical power is delivered with an intensity of 280μW/sr

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Electronics Letters  (Volume:31 ,  Issue: 15 )