Electroluminescence in nanostructures of different dimensionalities: A comparative simulation study
Steiger S, Veprek RG, Witzigmann B (2009)
Publication Type: Conference contribution
Publication year: 2009
Journal
Book Volume: 7211
Conference Proceedings Title: Proceedings of SPIE - The International Society for Optical Engineering
Event location: USA
DOI: 10.1117/12.807829
Abstract
We employ our simulation framework TDKP/AQUA to investigate bulk, planar quantum-well and V-groove quantum-wire light-emitting diodes. Carrier transport and spontaneous light emission are calculated selfconsistently for all degrees of quantization. The simulation is based on a semi-coherent picture of drift and diffusion along unquantized directions whereas confinement and luminescence are calculated from a multiband Schrödinger equation in the confined directions. The three structures with different quantization degrees are compared with respect to light conversion efficiency and overall output power. It is shown that carrier confinement greatly improves the radiative conversion efficiency but at the same time limits output power and enhances carrier leakage into the minority regions due to a reduced density of states. © 2009 SPIE.
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APA:
Steiger, S., Veprek, R.G., & Witzigmann, B. (2009). Electroluminescence in nanostructures of different dimensionalities: A comparative simulation study. In Proceedings of SPIE - The International Society for Optical Engineering. USA.
MLA:
Steiger, Sebastian, Ratko G. Veprek, and Bernd Witzigmann. "Electroluminescence in nanostructures of different dimensionalities: A comparative simulation study." Proceedings of the Physics and Simulation of Optoelectronic Devices XVII, USA 2009.
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