High quantum efficiency AlGaN/GaN solar-blind photodetectors grown by metalorganic chemical vapor deposition

被引:0
|
作者
Chowdury, U [1 ]
Wong, MM [1 ]
Collins, CJ [1 ]
Yang, B [1 ]
Zhu, TG [1 ]
Beck, AL [1 ]
Campbell, JC [1 ]
Dupuis, RD [1 ]
机构
[1] Univ Texas, Microelect Res Ctr, Austin, TX 78758 USA
来源
GAN AND RELATED ALLOYS-2001 | 2002年 / 693卷
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中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We report the growth, fabrication and characterization of back-illuminated AlGaN p-i-n photodetectors operating in the solar-blind wavelength range. A peak external quantum efficiency (EQE) of 45.5% (0.1 A/W) was obtained at a wavelength of 270 nm. This EQE was obtained at zero volt bias and without the use of any anti-reflection coating on the back of the substrate. To our knowledge, this is the highest EQE reported to date for p-i-n photodetectors operating in the solar-blind wavelength range.
引用
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页码:817 / 822
页数:4
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