Developing efficient, reliable UV LEDs

Compound Semiconductor, Nov./Dec. 2018

The performance of the UV LED improves by trimming its dislocation density, boosting light extraction and enhancing thermal management

Full article in »Compound Semiconductor volume 24 issue 8 November/December 2018.

Customized diode lasers and UV LEDs – from chips to ready-to-use systems

FBH Presse Release, 19.12.2018

FBH introduces novel diode lasers and advancements at Photonics West 2019 (2.-7.2.2019). Applications of the flexible and compact light sources include LiDAR, medicine, and (Raman) spectroscopy. Results and progresses in UV LEDs are presented jointly with the FBH spin-off UVphotonics.

»Full press release of Ferdinand-Braun-Institut

»LEDinside, 24.12.2018

High performance 4W UVC LED module for water disinfection

OSA Opto Light Press Release, 06.12.2018

OSA Opto Light GmbH

As part of the activities in the field of water disinfection, OSA Opto Light GmbH had developed in close collaboration with CiS Forschungsinstitut für Mikrosensorik GmbH, Fraunhofer IOSB, Branch Advanced System Technology, and Xylem Services GmH, a high performance UVC- LED radiation source, emitting 4 W optical power at an emission wavelength between 275 and 280 nm.

»Full press release of OSA Opto Light

»Semiconductor Today, 07.12.2018

»Compound Semiconductor, 07.12.2018

»reinraum online, 08.12.2018

»i-Micronews, 11.12.2018

»Photonics Cluster Berlin Brandenburg, 14.12.2018

»uv-klaerer.de, Dec. 2018 (in German only)

Measurement of redox status in blood and skin after UV stress via EPR spectroscopy

Freiberg Instruments Projects 2018/09

Our new partner Freiberg Instruments is improving and developing the UV irradiation and sensitivity of EPR measurements for skin and blood in cooperation with the dermatology department of the Charité in Berlin. The overall goal of this project is to develop a method for a significant and reproducible measurement of the redox status in blood after stress with UV irradiation as well as an easy-to-handle and small benchtop-equipment.

»ESR project page of Freiberg Instruments

PhD and Pioneer - UV LEDs for a Clean Future

TU Alumni Portraits, Episode 2

Technische Universität Berlin

The Physics Alumni Dr. Neysha Lobo-Ploch, Dr. Jens Rass and Dr. Tim Kolbe founded the startup company UVphotonics after their PhDs at TU Berlin. As an alternative to the currently still dominant mercury-based emitters, they develop, produce and market highly efficient ultraviolet light emitting diodes.

»Alumni portrait video

IKZ undertakes the initiative to develop deep-UV light emitting diodes

IKZ News, 09/2018

Leibniz Institute for Crystal Growth

The new joint project funded by the BMBF consortium “Advanced UV for Life” started on 1st of September under the coordination of IKZ. Over the next three years, IKZ group “Aluminium Nitride” together with the partners will build up and develop the value-added chain to facilitate commercial production of UV light emitting diodes (LEDs) with ultra-short wavelength of 230 nm on AlN substrates. Such components enable applications in gas and biochemical sensors, medical and environmental technology, water, surface, and air disinfection, but they are not yet available on the market.

Further information in the »News of Leibniz Institute for Crystal Growth.

New project "Nahrung der Zukunft, Food4Future – F4F"

IGZ Research, 21.08.2018

Leibniz Institute of Vegetable and Ornamental Crops Großbeeren/Erfurt e.V.

The Federal Ministry of Education and Research (BMBF) approved the project "Nahrung der Zukunft, Food4Future – F4F" in the frame of the initiative "Agrarsysteme der Zukunft" [Agricultural Systems of the Future]. The project is managed by the Leibniz Institute of Vegetable and Ornamental Crops Großbeeren/Erfurt e.V. (IGZ) and aims to develop innovative solutions in the food and agro-sector for the sustainable securing of adequate and healthy nutrition. Within the project, the targeted key technologies – (UV) LED technology and composite lightweight materials – are used to develop innovation approaches up to the proof of concept for “Designed Food” and “Natural Food” and their technical feasibility, their economic and market potential environmental sustainability as well as its social impact. Thus, the project ties in with the research and interdisciplinary cooperation of Advanced UV for Life. In addition to the IGZ, further partners of the consortium are involved: Fraunhofer IAP, Research Division Polymeric Materials and Composites PYCO; Freie Universität Berlin; InnoMat GmbH; OSRAM Opto Semiconductors GmbH; Technische Hochschule Wildau.

Find further Information »here.

Stabilization of AlN/sapphire templates during high-temperature annealing

FBH research, 20.07.2018

To obtain high-performance AlGaN-based optoelectronic devices, AlN starting layers with low threading dislocation densities (TDD) are required. FBH scientists have investigated and demonstrated a promising technique to manufacture suitable AlN/sapphire templates.

Further information in the »Research News of Ferdinand-Braun-Institut

Unveiling the machanism of strain relaxation in III-group nitrid films

IKZ News, 07/2018

Leibniz Institute for Crystal Growth

Researchers from the Electron Microscopy group resolved the fundamental ambiguity behind the formation of misfit dislocations in strained c-plane wurtzite layers. The new findings will help to optimise, in particular, the growth of AlGaN/GaN heterostructures for the deep-UV emitters and achieve either films with low defect density or, on the contrary, to intentionally promote plastic relaxation in such structures for strain-engineering purposes.

Further information in the »News of Leibniz Institute for Crystal Growth.

»Article in Semincoductor Today, Vol. 13, Issue 5 (p. 66)

Optimized electron blocking layer for UVB light emitting diodes

FBH News, 09.05.2018

(In)AlGaN-based UV-B LEDs are promising candidates to replace established UV light sources in various applications. However, high defect densities in these materials, among others, limit their efficiency. The FBH has therefore studied the influence of EBL doping and EBL material composition on the emission power of 310 nm LEDs.

Further information in the »Research News of Ferdinand-Braun-Institut

Large Turnout and interesting insights on ultraviolet LEDs at ICULTA-2018

Press Release, 08.05.2018

Advanced UV for Life

With over 260 participants from 23 countries, ICULTA-2018 – International Conference on UV LED Technologies & Applications 2018 in Berlin was a great success for this first-ever conference on ultraviolet (UV) light emitting diodes (LEDs) and their multiple applications. "We are more than satisfied that ICULTA with its wide range of high-quality contributions has received such great interest," explains Prof. Michael Kneissl, co-chair of the conference and head of the Joint Lab GaN Optoelectronics,operated jointly by Ferdinand-Braun-Institut and TU Berlin. "We are particularly pleased about the high level of industry participation, as it shows how attractive UV LEDs are for industrial applications.”

The event included presentations on cleaning and disinfection, industrial curing, and medicine. “The great success of ICULTA demonstrates the rapid advancement of UV LEDs, and wide range of solutions the technology has to offer,” says Oliver Lawal, President/CEO of Aquisense Technologies and President of IUVA, co-organizer of the event.

Find further information »here.

Young Researcher's Paper Award for FBH paper

FBH News, 04.05.2018

For the paper "Degradation of electro-optical parameters and electromigration of hydrogen in (In) AlGaN-based UVB LEDs" (J. Glaab, J. Ruschel, T. Kolbe, A. Knauer, J. Rass, N.  Lobo Ploch, M. Weyers, M. Kneissl, S. Einfeldt), Johannes Glaab was awarded the "Young Researcher's Paper Award" at the 6th International "Conference on Light Emitting Devices and Their Industrial Applications". The LEDIA'18 conference was held April 25-27 in Yokohama, Japan.

»Research News of Ferdinand-Braun-Institut

Heavy rush and interesting insights regarding ultraviolet LEDs at ICULTA-2018

Press Release, 26.04.2018

[Translate to Englisch:] Advanced UV for Life

The conference’s organizers expected 150 registrations – finally more than 260 participants from 23 countries took part in the ICULTA-2018 – International Conference on UV LED Technologies & Applications 2018 in Berlin. This is a great success for the first-ever conference on ultraviolet (UV) light emitting diodes (LEDs) and their multiple applications. "We are more than satisfied that ICULTA with its wide range of high-quality contributions has received such great interest," explains Prof. Michael Kneissl, co-chair of the conference and head of the Joint Lab GaN Optoelectronics that is operated jointly by Ferdinand-Braun-Institut and TU Berlin.

Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik

"We are particularly pleased about the high level of industry participation, as it shows how attractive UV LEDs meanwhile are for industrial applications. More than 60 percent of the ICULTA-2018 participants came from companies. The field of competence that was most strongly represented at the conference was UV LED devices, followed by applications in cleaning & disinfection, UV curing and medicine.

Find further information »here.

FBH To Present Latest UV LED Developments

Compound Semiconductor, 12.04.2018

Ferdinand-Braun-Institut (FBH) and its spin-off UVphotonics NT will be presenting their latest UV LED developments at the International Conference on UV LED Technologies & Applications 2018 (ICULTA-2018 ) from April 22 to 25 in Berlin.

Full article in »Compound Semiconductor News.

Off to short wavelengths! State of the art and trends of UV light-emitting diodes

FBH Presse Release, 12.04.2018

It is all about light-emitting diodes (LEDs) at ICULTA-2018 – International Conference on UV LED Technologies & Applications 2018. The focus of the international expert meeting, held from April 22 to 25, 2018 in Berlin, is on the ultraviolet (UV) spectral range and thus at wavelengths below 400 nm. Talks deal with progress in manufacturing technologies, current developments, applications and trends related to UV LEDs. The Ferdinand-Braun-Institut (FBH) and its spin-off UVphotonics NT GmbH are represented with several (invited) talks and booths at the accompanying exhibition, respectively.

»Full press release of Ferdinand-Braun-Institut

Unique scope of UV LED technologies and applications presented in Berlin: ICULTA-2018

Press Release, 11.04.2018

Advanced UV for Life

The first-ever ‘International Conference on UV LED Technologies & Applications’ (ICULTA-2018) is dealing with UV LED developments along the whole value chain. At the international conference, the state of the art of UV LED technology and trends are discussed. The conference will be held from April 22 to 25, 2018 at the MELIÃ hotel in Berlin, Germany and is jointly organized by the German consortium ‘Advanced UV for Life’ and the ‘International Ultraviolet Association’.

Find further information »here.

UV LEDs: Slashing costs with sputtering

COMPOUND SEMICONDUCTOR, Volume 24, Issue 2, March 2018

LEDs that emit in the deep UV are expensive to produce, because they have to be grown on AlN-on-sapphire templates that are formed using photolithography, etching and a second MOCVD step.
But the costs of device production could plummet, while LED performance is maintained, by growing these LEDs on sputtered, high-temperature annealed AlN-on-sapphire, according to a partnership between researchers in Germany and Japan.

Full article in »COMPOUND SEMICONDUCTOR.

UV Power is taking a shot at LED-substitutions for UV light sources

First Magazine, 25.03.2018

An aggregate of five research establishments and organizations have been chipping away at “UV Power”, a community-oriented venture financed by the German Federal Ministry of Education and Research (BMBF). The accomplices have made it their objective to give high-power UV LEDs to cover a wide assortment of utilization. These LEDs will, in the long run, supplant customary UV light sources, which frequently contain poisonous mercury, in territories, for example, creation, purification, the earth, life sciences, and solution. UV LEDs are likewise prone to open up new regions of use.

Full article in »First Magazine.

No More Sunburn - Non-invasive LED-based measurement of the sun protection factor

Optik & Photonik, 1/2018

A UV-LED based system was devel- oped that allows to determine the sun protection factor (SPF) of sunscreen lotions in a non-invasive way in vivo. This method is faster and reduces the medical risk for the test subjects.

Full article in »Optik & Photonik.

International Conference on UV LED Technologies & Applications 2018 - April 22 – 25, 2018 in Berlin, Germany

Optik & Photonik, 1/2018

It is all about ultraviolet LEDs – manu- facturing technologies, novel develop- ments, applications, and trends. “Iculta 2018” brings together experts from sci- ence and industry to crosslink and to discuss the latest advances in UV LED technologies along with the wide range of emerging applications.

Further information in »Optik & Photonik and on »ICULTA-2018 website.

Innovatieproject ‘UV Power’ moet led-alternatief voor uv-lichtbron creëren

LED Magazine, 12.01.2018

Het innovatieproject ‘UV Power’, dat wordt gecoördineerd door Osram Opto Semiconductors, moet een led-alternatief met hoog vermogen gaan creëren voor traditionele uv-lichtbronnen.

Further information on »LED Magazine platfom.

German-funded UV Power project working on LED replacements for conventional UV light sources

Semiconductor Today, January 2018

Since February, five research institutes and companies have been working on ‘UV Power’, a collaborative research project funded by the German Federal Ministry of Education and Research (BMBF) as part of ‘Advanced UV for Life’. Prototype LEDs and the technology for producing high-power LEDs for the UVB and UVC spectrums on the basis of the aluminium gallium nitride (AlGaN) material system are scheduled to be presented by 2020.

Full article in »Semiconductor Today (p.54).