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Journal Article Analytic Formalism for Current Crowding in Light Emitting Diodes
Cited 6 time in scopus Share share facebook twitter linkedin kakaostory
Authors
Kyu-Seok Lee
Issue Date
2012-09
Citation
Physica Status Solidi (A), v.209, no.12, pp.2630-2634
ISSN
1862-6300
Publisher
Wiley-VCH Verlag GmbH
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1002/pssa.201228473
Abstract
This paper presents an analytic approach to simulating current crowding (CC) in light-emitting diodes with parallel p- and n-contacts. The electrical potential difference across the p-i-n layers is derived from the Laplace equation, whereas the current density through the p-i-n layers is obtained from the current density - voltage relation of a single-diode model. Since these two properties influence each other, they are calculated iteratively. It is found that CC depends on the applied voltage (or the average current density), the sheet resistances of the p- and the n-contact layers, the width of the active region, and the specific series resistance and ideality factor of the p-i-n layers. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
KSP Keywords
Analytic Approach, Average current, Co. KGaA, Electrical potential difference, Laplace equation, P-i-n, Single-diode model, active region, applied voltage, current crowding, current density