Title :
Light extraction efficiency from visible light-emitting diodes
Author :
Boroditsky, M. ; Yablonovitch, Eli
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
Summary form only given. Because escape probability is about 2% per radiating surface, it is a good idea to use all six emitting surfaces of a solid rectangular LED. We introduce a photonic gas model for modelling this type of LED. Light extraction efficiency in thick (250/spl times/250/spl times/250 /spl mu/m) transparent substrate LED is a result of competition of light escape from the semiconductor chip, reabsorption in the active layer, and free-carrier absorption in the bulk. This modelling is confirmed by Monte Carlo simulations.
Keywords :
Monte Carlo methods; light emitting diodes; optical films; probability; semiconductor device models; semiconductor plasma; semiconductor thin films; substrates; transparency; LED; Monte Carlo simulation; active layer reabsorption; emitting surfaces; escape probability; free-carrier absorption; light extraction efficiency; photonic gas model; radiating surface; semiconductor chip; solid rectangular LED; transparent substrate LED; visible light-emitting diodes; Biomedical optical imaging; Light emitting diodes; Modems; Nonlinear optics; Optical harmonic generation; Optical recording; Refractive index; Semiconductor diodes; Substrates; Surface texture;
Conference_Titel :
Lasers and Electro-Optics, 1996. CLEO '96., Summaries of papers presented at the Conference on
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-443-2
