H. Deneve et al., RECYCLING OF GUIDED MODE LIGHT-EMISSION IN PLANAR MICROCAVITY LIGHT-EMITTING-DIODES, Applied physics letters, 70(7), 1997, pp. 799-801
Results are presented on planar microcavity light emitting diodes with
different device diameters. A record external quantum efficiency of 2
0% is achieved for a 1.5 mm light emitting diode, The strong dependenc
e of the quantum efficiency on current density and device size are com
pared with theoretical results, A good correspondence is obtained when
spectral broadening and photon recycling are taken into account. (C)
1997 American Institute of Physics.