In the joint CORSA project, SARS-CoV-2 and further respiratory viruses on surfaces and skin are to be inactivated by using UVC light. The project team is developing special UVC LEDs for this purpose and is investigating parameters such as wavelengths, irradiation doses and virus habitats. The German Federal Ministry of Education and Research is supporting the three-year project from 2021 with a total of three million euros.
Osram Opto Semiconductors is driving industrialization of UV-C LEDs. Oslon UV 3636, Osram’s first UV-C LED, is available in a low- and a mid-power version and features compact dimensions of 3.6 mm x 3.6 mm. With a wavelength of 275 nanometers, both versions are ideal for disinfection applications. The low-power version achieves 4.5 milliwatts at 30 milliamperes. The mid-power version impresses with 42 milliwatts at 350 milliamperes.
Osram has been active in the UV area for many years and developed in-depth knowledge of UV technology from participating in various research projects with partners from industry and research, including the Advanced UV for Life consortium.
FBH develops UV LEDs for disinfection, e.g. to avoid infection with COVID19. To enhance output power and lifetime of such devices the impact of AlN/sapphire templates on the strain relaxation mechanisms and defect density in AlGaN layers was studied.
In cooperation with the International Security and Development Center (ISDC), the Leibniz Institute of Vegetable and Ornamental Crops Großbeeren/Erfurt e.V. (IGZ) has launched a Citizen Science Initiative. The aim of the joint research project is to track the effects of the pandemic and to build a global knowledge base on how people deal with this extraordinary situation. The project will provide data to support sustainable socio-economic responses to the COVID 19 pandemic.
The survey is currently in its second round.
Dr. Norman Susilo has been awarded with the renowned Dimitri N. Chorafas Prize for is thesis entitled »Heterostructure design and epitaxial growth of AlGaN-based light emitting diodes emitting in the UVC wavelength range. This award is assigned to outstanding work in selected fields in the engineering sciences, medicine and the natural sciences. It rewards research characterized by its high potential for practical application and by the special significance attached to its aftermath. The Chorafas Foundation honors every year graduates from 25 selected international universities including ETH Zuerich, MIT, and Tokyo Institute of Technology.
The research work of Mr. Susilo was closely related to the activities in "Advanced UV for Life", especially the joint project "UVPower".
More information on the »Chorafas-Preis.
The current frequent is released as printed and online version. It deals with the first step in the realization of optoelectronic and electronic semiconductor devices: the epitaxial growth processes for laser diodes and nitride-based devices, such as UV-LEDs, including the corresponding material analysis.
A turnkey LED irradiation system from UVphotonics NT GmbH and the Ferdinand-Braun Institute is designed for surface treatment.
AlGaN-based far-ultraviolet light-emitting diodes (far-UVC LEDs) with emission below 250 nm are an attractive solution for a number of applications such as monitoring of gas concentrations, and measurement of nitrate in water. Recently, the possibility of using these far-UVC LEDs to destroy microorganisms without allowing resistances to develop has drawn particular interest. Their light does not penetrate into the living layers of the skin. It is therefore expected that the skin will not be harmed at all or will be damaged so little that the natural repair mechanisms compensate for the effect. However, fabrication of high-power devices at wavelengths below 250 nm is challenging.
According to estimates, multi-resistant hospital germs kill between 10,000 and 20,000 people in Germany each year. Standard medicines and antibiotics are often already ineffective. As part of the Joint Lab GaN Optoelectronics, researchers at the Ferdinand-Braun-Institut, Leibniz Institut für Höchstfrequenztechnik (FBH) and Technische Universität Berlin (TU Berlin) have developed special LEDs, which emit UVC light at wavelengths of around 230 nanometers (nm). “The goal is to use these LEDs to combat multi-resistant germs,” says Professor Dr. Michael Kneissl, head of the Workgroup Experimental Nanophysics and Photonics at TU Berlin.
OSA Opto Light has just finished developing the easy-to-use LED system OLM-059 for disinfection of surfaces. This system operates at 265 nm, which is the optimal wavelength for DNA and RNA inactivation, has a light emitting area of 80 x 15 mm and achieves an optical power density of 20 mW/cm² at a distance of 1 cm from the glass window.
Due to the rapid technical progress of LEDs in the UVC range between 240 and 280 nm, the interest in UV LEDs as an alternative to conventional mercury-containing systems for water treatment has increased in recent years. The Federal Ministry of Education and Research (BMBF) supported the basic project "GEntLED-UV" on the topic "UV-LED". Within this joint project, TZW could determin how efficient different wavelengths act on undesired microorganisms in the water. Technical aspects such as service life and monitoring of the LED module in comparison to the established low and medium pressure mercury vapour lamps were also taken into account.
For disinfection purposes, the compact system can be equipped with UV LEDs to eliminate germs on critical surfaces such as mobile phones. It can also be assembled with LEDs providing the optimum emission spectrum for polymer curing and medical treatments – even multiple wavelengths are possible.
The ‘International Conference on UV LED Technologies & Applications – ICULTA’ has been rescheduled to next year and will be held from April 18 to 21, 2021 in Berlin, Germany. Once more, it offers a forum for exchange, networking and discussions on the latest progress and innovations in the development of UV LEDs and their broad spectrum of applications. Additionally we look forward to the opportunity to discuss the impacts of COVID19 on UV LED technology solutions. The conference is jointly organized by the German consortium Advanced UV for Life and the International Ultraviolet Association (IUVA).
A novel LED irradiation system developed by the Ferdinand-Braun-Institut aims to kill microorganisms with ultra-short wave UV light – without side effects. Prototype handed over to the Charité for initial testing.
For several years, the CiS Forschungsinstitut has been working intensively with many partners in the consortium "Advanced UV for Life" (BMBF-funded programme "Zwanzig20 - Partnerschaft für Innovation") in all aspects of production, assembly, metrological characterisation and application-oriented use of UV LEDs.
In particular, the optoelectric measurement technology and the associated evaluation have been significantly further developed in this context.
Aluminum nitride (AlN) bases ultraviolett (UV) technologies promise a wide range of potential market applications e.g. in the area of disinfection, agriculture, and process technologies. Integrated and highly compact UV light-emitting diode (LED) devices could, for example, be used to clean drinking water in remote areas and be applied to disinfect surfaces in hospitals and public areas.
The low-defect AlN epitaxial layers on precisely oriented AlN substrates optimized at IKZ provide an ideal basis for research work on aluminum-rich AlxGa1-xN layers or UVC LEDs with ultra-short wavelengths.
OSA Opto Light has completed a first easy-to-use LED lamp with integrated battery for disinfection of surfaces. This rod-shaped lamp used with UVC LEDs has an optical power of approx. 15 mW/cm² @ 265 nm, which can eliminate viruses with a simple hand scan. This LED module contains six UV LEDs with a lens that focuses the light in an angle of about 20°C. The Module can be operated for about 30 min before needing to recharge.
Researchers at the Fraunhofer Institute for Optronics, Systems Engineering and Image Exploitation IOSB, Applied Systems Technology-AST, have developed an innovative solution for disinfecting smartphones. Within a few seconds, smartphones can be cleaned of bacteria and viruses such as SARS-CoV-2. Instead of expensive chemicals, UVC light is used. Further fields of application are imaginable.
The Senate of Berlin has decreed that all conferences with more than 50 participants must be canceled. Therfore, the ‘International Conference on UV LED Technologies & Applications - ICULTA 2020' cannot take place in April 2020 as planned but needs to be postponed.
The organizers - Advanced UV for Life consortium and IUVA - are in the process of figuring out a new date.
UVphotonics will present novel UV LED developments with emission wavelengths from 330 nm to as low as 230 nm at Photonics West 2020. The versatile light sources are configurable to various application requirements.
FBH exhibits novel diode lasers and modules at Photonics West 2020. Applications include materials processing, LiDAR, medicine, and (Raman) spectroscopy. Progress in UV LEDs is presented jointly with the spin-off UVphotonics.