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

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

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 5 mA, 1 mW of optical power is delivered with an intensity of 280 µW/sr.

[1] Deborah L. Sivco,et al. Increased fiber communications bandwidth from a resonant cavity light emitting diode emitting at λ=940 nm , 1993 .

[2] P. Demeester,et al. High efficiency planar microcavity LED's: comparison of design and experiment , 1995, IEEE Photonics Technology Letters.

[3] Piet Demeester,et al. 6% external quantum efficiency from InGaAs/(Al)GaAs single quantum well planar microcavity LEDs , 1994 .

[4] E. Schubert,et al. Highly Efficient Light-Emitting Diodes with Microcavities , 1994, Science.