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Reliability issues in AlGaN based deep ultraviolet light emitting diodes
2009 IEEE International Reliability Physics Symposium, 2009AlGaN based deep ultraviolet light emitting diodes (DUV LEDs) are key components in systems for air, water, and food purification and germicidal applications. Because of the heteroepitaxial growth of the DUV LED epilayers on sapphire, they have a large number of dislocations that invariably leads to a reduction of quantum efficiency and lifetime ...
Asif Khan +4 more
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AlGaN-based deep ultraviolet light emitting diodes with reflection layer
SPIE Proceedings, 2007ABSTRACT We report on the effect of reflection layer on electrical and optical characteristics of AlGaN-based multiple-quantum well deep-UV flip chip light-emitting diodes. Relatively thick Al metal as a reflector layer was deposited on the p-contact of deep-UV LEDs by e-beam evaporat or at a nominal chamber pressure of 2 u 10 -6 mtorr.
M. Khizar, Yaskin M. Akhtar Raja
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Microbicidal effect of deep ultraviolet light-emitting diode irradiation
Lasers in Medical Science, 2020Tatsuya Takagi +14 more
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Deep Ultraviolet Light Emitting Diodes with Emission below 300 nm
MRS Proceedings, 2005AbstractIn this paper we will describe the problems in growth and fabrication of deep UV LED devices and the approaches that we have used to grow AlGaN-based multiple quantum well deep UV LED structures and to overcome issues of doping efficiency, cracking, and slow growth rates both for the n- and the p-type layers of the device structures.
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Deep ultraviolet light-emitting diodes and photodetectors for UV communications
SPIE Proceedings, 2005We present deep UV light-emitting diodes and photodetectors based on high Al-composition AlGaN. We have obtained very short wavelength UV LEDs (
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EnlightenGAN: Deep Light Enhancement Without Paired Supervision
IEEE Transactions on Image Processing, 2021Yifan Jiang, Xinyu Gong, Ding Liu
exaly
Carrier Transport in Multi Colour Deep Ultraviolet Light Emitting Diodes
2022 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), 2022G. Hofmann +7 more
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Interfacial Potassium‐Guided Grain Growth for Efficient Deep‐Blue Perovskite Light‐Emitting Diodes
Advanced Functional Materials, 2021Yan-Qing Li, Jian-Xin Tang
exaly
A red light–responsive photoswitch for deep tissue optogenetics
Nature Biotechnology, 2022Ramsey Bekdash +2 more
exaly