Reducing the Current Crowding Effect on Nitride-Based Light-Emitting Diodes Using Modulated P-Extension Electrode Thickness
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概要
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In this paper, nitride-based light-emitting diodes (LEDs) with the modulated thickness of p-extension electrode were proposed and fabricated. The current crowding is always occurred in the end of p-extension electrode. Thus, the resistance of p-extension electrode will be increased by reducing its thickness to prevent current crowding. The modulated thickness of p-extension electrode can be employed to enhance the light output power and reduce overall operated temperature. Compared to the conventional LED, the enhancement in light output power is 13.9% at 150 mA and the reduction in average operated temperature is about 14.6% at 80 mA. Regarding the characteristics of electrostatic discharge (ESD), the failure mode of new electrode design occurred on the terminal of thick p-extension electrode rather than current crowding region.
- 2013-01-25
著者
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Wang Chun-kai
Department Of Electrical Engineering National Cheng-kung University
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Chiou Yu-zung
Department Of Electrical Engineering National Cheng Kung University
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CHANG Sheng-Po
Institute of Microelectronics & Department of Electrical Engineering National Cheng Kung University
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Chiou Yu-Zung
Department of Electronic Engineering, Southern Taiwan University, Tainan 71005, Taiwan
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Chang Sheng-Po
Institute of Microelectronics, National Cheng Kung University, Tainan 70101, Taiwan
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Chiang Tsung-Hsun
Institute of Microelectronics, National Cheng Kung University, Tainan 70101, Taiwan
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Wang Chun-Kai
Department of Electronic Engineering, Southern Taiwan University, Tainan 71005, Taiwan
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