Effects of nanowire geometry on light extraction efficiency in nanowire deep-ultraviolet LEDs

Matthew Seitz; Bryan Melanson; Jing Zhang

doi:10.1117/12.2610017

7 March 2022 Effects of nanowire geometry on light extraction efficiency in nanowire deep-ultraviolet LEDs

Matthew Seitz, Bryan Melanson, Jing Zhang

Proceedings Volume PC12022, Light-Emitting Devices, Materials, and Applications XXVI; PC1202214 (2022) https://doi.org/10.1117/12.2610017
Event: SPIE OPTO, 2022, San Francisco, California, United States

Conference Poster

Abstract

AlGaN light emitting diodes (LEDs) emitting in the deep ultraviolet (DUV) range typically suffer from poor light extraction efficiency (LEE). In this study, we determine the effects of nanostructure height, diameter, and emission wavelength on LEE. Changes to device morphology influencing surface to volume ratio (SVR) are studied in order to optimize device dimensions to maximize LEE. Simulations show improvements in LEE of up to 300% and 60% for structures with increased height and decreased diameter respectively, which is predicted for higher SVR structures. These results shows that engineering of nanostructure SVR could be used to improve DUV LED efficiency.

Citation Download Citation

Matthew Seitz, Bryan Melanson, and Jing Zhang "Effects of nanowire geometry on light extraction efficiency in nanowire deep-ultraviolet LEDs", Proc. SPIE PC12022, Light-Emitting Devices, Materials, and Applications XXVI, PC1202214 (7 March 2022); https://doi.org/10.1117/12.2610017

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