First Demonstration of Semipolar Deep Ultraviolet Light Emitting Diode on m-Plane Sapphire with AlGaN Multiple Quantum Wells

被引:42
作者
Balakrishnan, Krishnan [1 ]
Adivarahan, Vinod [2 ]
Fareed, Qhalid [2 ]
Lachab, Mohamed [1 ]
Zhang, Bin [2 ]
Khan, Asif [1 ]
机构
[1] Univ S Carolina, Dept Elect Engn, Columbia, SC 29208 USA
[2] Nitek Inc, Irmo, SC 29063 USA
关键词
GALLIUM NITRIDE;
D O I
10.1143/JJAP.49.040206
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report on the first demonstration of a semipolar AlGaN based deep ultraviolet (UV) light emitting diode (LED), with a peak emission wavelength of 307 nm. The LED structure was grown on an m-plane sapphire substrate using metal organic chemical vapor deposition (MOCVD). A combination of pulsed MOCVD (PMOCVD) grown AlN and a short period AlN/AlGaN superlattice structure was found to be instrumental in achieving singular semipolar structural phase of (11 (2) over bar2) with a defect density low enough to fabricate the light emitting device. The on-wafer optical output power of the fabricated LED was similar to 20 mu W at a dc pump current of 20 mA. (C) 2010 The Japan Society of Applied Physics
引用
收藏
页码:0402061 / 0402063
页数:3
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