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Applied Physics Letters : Directional light extraction from thin-film resonant cavity light-emitting diodes with a photonic crystal

By K. Bergenek, Ch. Wiesmann, H. Zull, R. Wirth, P. Sundgren et al

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Book Id: WPLBN0002169191
Format Type: PDF eBook :
File Size: Serial Publication
Reproduction Date: 10 December 2008

Title: Applied Physics Letters : Directional light extraction from thin-film resonant cavity light-emitting diodes with a photonic crystal  
Author: K. Bergenek, Ch. Wiesmann, H. Zull, R. Wirth, P. Sundgren et al
Volume: Issue : December 2008
Language: English
Subject: Science, Physics, Natural Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Applied Physics Letters Collection
Historic
Publication Date:
Publisher: American Institute of Physics

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Ch. Wiesmann, H. Zull, R. Wirth, P. Sundgren Et A, K. B. (n.d.). Applied Physics Letters : Directional light extraction from thin-film resonant cavity light-emitting diodes with a photonic crystal. Retrieved from http://www.worldjournal.org/


Description
Description: We report directional light extraction from AlGaInP thin-film resonant cavity light emitting diodes RCLEDs with shallow photonic crystals PhCs . Diffraction of guided modes into the light extraction cone enhances the light extraction by a factor of 2.6 compared to unstructured RCLEDs, where the farfields still show higher directionality than Lambertian emitters. The external quantum efficiency is 15.5% to air and 26% with encapsulation, respectively. The PhC-RCLEDs are also more stable to a temperature induced wavelength shift than unstructured RCLEDs.

 
 


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