Title :
High efficiency planar microcavity LED´s: comparison of design and experiment
Author :
Neve, H. De ; Blondelle, J. ; Baets, R. ; Demeester, P. ; Van Daele, P. ; Borghs, G.
Author_Institution :
Dept. of Inf. Technol., Ghent Univ., Belgium
fDate :
3/1/1995 12:00:00 AM
Abstract :
This paper describes the design of substrate emitting microcavity LED´s and a comparison of experimental results with modeling results. The modeling is based on a simulation tool which accounts for guided modes, quantum well reabsorption and photon recycling. The overall quantum efficiencies of /spl lambda//2 and /spl lambda/ cavities both with a 60% and a 90% reflecting DBR mirror are compared and a good qualitative correspondence is found between theory and experiment. The maximum theoretical overall quantum efficiency for the considered structures is expected to be around 14%, whereas the best experimental value amounts to 10.2%.<>
Keywords :
light emitting diodes; mirrors; modelling; optical design techniques; optical resonators; semiconductor quantum wells; simulation; substrates; 10.2 percent; 14 percent; 60 percent; 90 percent; design; experiment; guided modes; high efficiency planar microcavity LED´s; maximum theoretical overall quantum efficiency; modeling results; overall quantum efficiencies; photon recycling; quantum well reabsorption; reflecting DBR mirror; simulation tool; substrate emitting microcavity LED´s; Information technology; Light emitting diodes; Microcavities; Mirrors; Optical devices; Optical pumping; Quantum mechanics; Radiative recombination; Semiconductor lasers; Substrates;
Journal_Title :
Photonics Technology Letters, IEEE
