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A SPICE-based 3-dimensional circuit model for Light-Emitting Diode  

Eom, Hae-Yong (Dept. of Electronic, Information and Communication Engineering, Hongik University)
Yu, Soon-Jae (Division of Electronic Engineering, Sunmoon University)
Seo, Jong-Wook (Dept. of Electronic, Information and Communication Engineering, Hongik University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.44, no.2, 2007 , pp. 7-12 More about this Journal
Abstract
A SPICE-based 3-dimensional circuit model of LED(Light-Emitting Diode) was developed for the design optimization and analysis of high-brightness LEDs. An LED is represented as an array of pixel LEDs with small preassigned areas, and each of the pixel LEDs is composed of circuit networks representing the thin-film layers(n-metal, n- and p-type semiconductor layers, and p-metal), ohmic contacts, and pn-junctions. Each of the thin-film layers and contact resistances is modeled by a resistance network, and the pn-junction is modeled by a conventional pn-junction diode. It has been found that the simulation results using the model and the corresponding parameters precisely fit the measured LED characteristics.
Keywords
LED; SPICE; 3-dimensional; circuit model;
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