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Luminescence and efficiency optimization of InGaN/GaN core-shell nanowire LEDs by numerical modelling

Roemer F, Deppner M, Andreev Z, Koelper C, Sabathil M, Strassburg M, Ledig J, Li S, Waag A, Witzigmann B (2012)

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Publication Type: Conference contribution

Publication year: 2012

Journal

Book Volume: 8255

Conference Proceedings Title: Proceedings of SPIE - The International Society for Optical Engineering

ISBN: 9780819488985

DOI: 10.1117/12.908207

Abstract

We present a computational study on the anisotropic luminescence and the efficiency of a core-shell type nanowire LED based on GaN with InGaN active quantum wells. The physical simulator used for analyzing this device integrates a multidimensional drift-diffusion transport solver and a k · p Schrödinger problem solver for quantization effects and luminescence. The solution of both problems is coupled to achieve self-consistency. Using this solver we investigate the effect of dimensions, design of quantum wells, and current injection on the efficiency and luminescence of the core-shell nanowire LED. The anisotropy of the luminescence and re-absorption is analyzed with respect to the external efficiency of the LED. From the results we derive strategies for design optimization. © 2012 SPIE.

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APA:

Roemer, F., Deppner, M., Andreev, Z., Koelper, C., Sabathil, M., Strassburg, M.,... Witzigmann, B. (2012). Luminescence and efficiency optimization of InGaN/GaN core-shell nanowire LEDs by numerical modelling. In Proceedings of SPIE - The International Society for Optical Engineering.

MLA:

Roemer, Friedhard, et al. "Luminescence and efficiency optimization of InGaN/GaN core-shell nanowire LEDs by numerical modelling." Proceedings of the Physics and Simulation of Optoelectronic Devices XX 2012.

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