The world's top Ten innovative LED light source devices in 2020 (6/6)
Views : 681
Author : Shenzhen Crown Lighting
Update time : 2021-06-28 21:31:38
Display and interpretation of the world's top ten innovative LED light source devices in 2020 (6/6)
10. AlGaN-based full-structure deep ultraviolet LED
Also in December, the collaborators of Peking University, Songshan Lake Materials Laboratory, and Chinese Academy of Medical Sciences successfully created AlGaN-based full-structure deep ultraviolet LEDs, and based on this, they produced germicidal light source modules with high power density. , It has achieved excellent performance in the killing experiment of the new coronavirus.
(a) Deep UV LED output power and current curve (the illustration shows the corresponding emission spectrum)
(b) Deep UV LED array (15×13) integrated light source working status display
(c) Integrated light source power density at different irradiation distances Curve with working current
(d) Schematic diagram of new coronavirus killing experiment
The development of the LED device covers the entire industry chain range of upstream material epitaxy, midstream chip design and preparation, downstream devices and module packaging, and the first step is based on nano-scale patterned substrates and high-temperature MOCVD technology at the epitaxy end. Crystal quality AlGaN-based deep ultraviolet LED epitaxial structure; the second step is to achieve high current injection efficiency and high light efficiency by designing the electrode structure and groping electrode technology at the midstream tape end; the third step is to optimize the packaging process by using AlN ceramic substrates in the downstream With circuit design, a high-power sterilization module with excellent stability is made.
Deep ultraviolet integrated light source kills the new coronavirus in 1 second experimental results
Through the coordination of the three steps, the assembled high-power-density deep-ultraviolet germicidal light source has achieved 1 second instantaneous killing of the new coronavirus in the BSL-3 laboratory of the Institute of Experimental Animal Science of the Chinese Academy of Medical Sciences. In the experiment, the results of the irradiation group showed that more than 99.99% of the new coronavirus was completely killed.
With its excellent sterilization performance, the LED device not only shows great potential for alleviating the new crown epidemic in the short term, but also provides new development ideas for the deep ultraviolet sterilization industry in the future.
Continuous improvement of performance, continuous extension of due fields, and continuous improvement of technological content...As the "brain" of the lighting industry, the birth of every innovative LED light source device will bring transformational development to the development of the lighting industry The promotion will also inspire more lighting people to devote themselves to technological innovation, and inject more knowledge and wisdom into the healthy development of the global lighting industry.
