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학술지 Analytic Formalism for Current Crowding in Light Emitting Diodes
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저자
이규석
발행일
201209
출처
Physica Status Solidi (A), v.209 no.12, pp.2630-2634
ISSN
1862-6300
출판사
Wiley-VCH Verlag GmbH
DOI
https://dx.doi.org/10.1002/pssa.201228473
협약과제
12VB2300, 전력변환효율 75%급 LED 광소자공정 및 표준 분석기술 개발, 이규석
초록
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.
키워드
current crowding, current density-voltage curve, LED, single diode model
KSP 제안 키워드
Analytic Approach, Average current, Co. KGaA, Current density-voltage, Electrical potential difference, Laplace equation, P-i-n, Voltage curve, active region, applied voltage, current crowding