A Hybrid Micro-Pixel Based Deep Ultraviolet Light-Emitting Diode Lamp

被引：32
|
作者：
Hwang, Seongmo [2 ]
Islam, Monirul [2 ]
Zhang, Bin [2 ]
Lachab, Mohamed [1 ]
Dion, Joe [2 ]
Heidari, Ahmad [2 ]
Nazir, Haseeb [2 ]
Adivarahan, Vinod [2 ]
Khan, Asif [1 ]
机构：
[1] Univ S Carolina, Dept Elect Engn, Columbia, SC 29208 USA
[2] Nitek Inc, Irmo, SC 29063 USA
来源：
APPLIED PHYSICS EXPRESS | 2011年 / 4卷 / 01期
关键词：
280; NM;
D O I：
10.1143/APEX.4.012102
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on the room temperature electrical and optical characterization of a multichip light-emitting diode (LED) lamp with peak emission at 281 nm. Four pairs of micro-pixel LED arrays were connected in series to fabricate the lamp, which delivered a pulsed output power of 235 mW at 1.18 A (duty cycle similar to 0.5%), and attained a high external quantum efficiency of 4.63%. Under dc operation, the maximum power achieved by this lamp was similar to 20 mW at a drive current of 220 mA. The peak output power improved 1.62-fold after a thermoelectric cooler was added to the device packaging assembly. (C) 2011 The Japan Society of Applied Physics
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页数：3
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