Resources | Projects | UV-Modules | UV-LEDs | Dec 06, 2017

“UV Power” Research Project Is Working on LED-Replacements for Conventional UV Light Sources

Since February 2017, a total of five research institutes and companies have been working on “UV Power”, a collaborative project funded by the German Federal Ministry of Education and Research (BMBF). The partners have made it their goal to provide high-power UV LEDs to cover a wide variety of applications. These LEDs will eventually replace conventional UV light sources, which often contain toxic mercury, in areas such as production, disinfection, the environment, life sciences and medicine. UV LEDs are also likely to open up new areas of application.

As part of “Advanced UV for Life”, a consortium of research institutes and companies which is being funded under the federal “Zwanzig20” program, Osram Opto Semiconductors is working with four partners on high-power UV LEDs for the mass market: the Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik (FBH), the Technical University of Berlin, LayTec AG and UVphototonics NT GmbH. Prototype LEDs and the technology for producing high-power LEDs for the UVB and UVC spectrums on the basis of the aluminum gallium nitride (AlGaN) material system are scheduled to be presented by 2020.

The partners are therefore pooling their scientific know-how and making their highly specialized technical facilities and analysis methods available. Development of the highpower LEDs is taking place along the entire technology chain for LED production. “The various tasks have been distributed among the partners on the basis of their strengths – everything from the production of structured sapphire substrates, epitaxy and chip processing to packaging and analytics”, said Dr. Hans-Jürgen Lugauer, Head of UV Development at Osram Opto Semiconductors. “With our presence on the international market and our expertise in industrial manufacturing we are boosting the impact of the consortium considerably,” he added.

To speed up development and make efficient use of resources, the partners are splitting their work into different wavelength ranges. In addition to coordinating the entire project, Osram Opto Semiconductors is taking on the wavelength range of 270 to 290 nm. In epitaxy, the Ferdinand-Braun-Institut is covering the adjacent wavelengths in the UVB range between 290 and 310 nm and processing the epitaxial wafers into UV chips. The Technical University of Berlin is focusing on the wavelength range of 250 to 270 nm, applying its expertise in material analysis for AIGaN materials and AIGaN LEDs. TU Berlin also has extensive specialized equipment for UV analysis. LayTec AG is developing tailor-made techniques for controlling the epitaxy and plasma etching systems. FBH spin-off UVphotonics NT GmbH is the interface to users. It is responsible for optimizing the chip design, for achieving high currents and for efficient cooling. The company is also handling the statistical collection and analysis of process data from the entire production chain and making this data available to the project partners for optimizing the production process. The important subjects of assembly technology and the effects of aging will be investigated by FBH, TUB and UVphotonics in further projects as part of the consortium.

The optical outputs of the new LEDs are expected to be greater than 120 mW at 300 ± 10 nm, 140 mW at 280 ± 10 nm and 80 mW at 260 ± 10 nm. The research group is also working on making significant improvements to the aging behavior of the LEDs so they can be operated longer and more economically.

For more information on Advanced UV for Life, please visit https://www.advanced-uv.de/en/about/welcome/

About Osram:

Osram, based in Munich, is a leading global high-tech company with a history dating back more than 110 years. Primarily focused on semiconductor-based technologies, our products are used in highly diverse applications ranging from virtual reality to autonomous driving and from smart phones to smart and connected lighting solutions in buildings and cities. Osram uses the endless possibilities of light to improve the quality of life for individuals and communities. Osram’s innovations enable people all over the world not only to see better, but also to communicate, travel, work and live better. Osram has approximately 26,400 employees worldwide as of end of fiscal 2017 (September 30) and generated revenue of more than €4.1 billion. The company is listed on the stock exchanges in Frankfurt and Munich (ISIN: DE000LED4000; WKN: LED400; trading symbol: OSR). Additional information can be found at www.osram.com

FEATURED

LumiTop 4000: Comprehensive Optical Wafer Testing for μLEDs

LumiTop 4000: Comprehensive Optical Wafer Testing for μLEDs Instrument Systems offers a unique camera-based measurement solution for μLED wafer testing that generates 2-dimensional, pixel-resolved optical analyses within given cycle times. The LumiTop 4000 has a resolution of 12 MP and can detect the smallest of defects and inhomogeneities on the wafer. ... Read more »

FEATURED

Lumileds Maximizes Field Usable Lumens: New LUXEON HL2X LED

Lumileds Maximizes Field Usable Lumens: New LUXEON HL2X LED Lumileds introduces the LUXEON HL2X, the ideal choice for roadway lighting and sports lighting fixtures with the highest flux and efficiency in an industry standard package. "With 318+ lumens at 700 mA and 85°C, LUXEON HL2X delivers more 'field usable lumens' for optical engineers to work with. ... Read more »

EDITORIAL

Australian Associated Press Recently Wrote: Red Light Could Improve Over-40s' Eyesight

Australian Associated Press Recently Wrote: Red Light Could Improve Over-40s' Eyesight A small LED torch that emits deep red light could help improve declining eyesight, scientists have said: A study by University College London, involving a small sample size of 24 people, has shown that staring at long wavelength light for three minutes every day can "significantly improve vision" ... Read more »

EDITORIAL

Signify Invests to Broaden Its UV-C Lighting Portfolio for Professional Disinfection

Signify Invests to Broaden Its UV-C Lighting Portfolio for Professional Disinfection Signify, the world leader in lighting, is increasing its UV-C lighting production capacity and expanding its UV-C product portfolio. The company is leveraging more than 35 years of expertise in UV-C lighting to address the growing global need for the disinfection of air, surfaces and objects. Read more »