The Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP will be presenting flexible organic light-emitting diodes (OLEDs) at AIMCAL 2016 in Dresden, Germany, from May 30th to June 2nd, 2016. These OLEDs have been fabricated on ultra-thin glass and encapsulated with a ultra-thin glass foil in the same process.
Organic light-emitting diodes have already found acceptance as a light source in first luminaires on the market on rigid glass. However, far larger shares of the market could be acquired, if flexible large-area OLEDs could be manufactured cost-effectively with consistent quality.
Scientists are working feverishly on this worldwide. Large-area OLEDs could be employed not only in innovative furniture designs, but also deliver good service in other sectors requiring specialized curved design, such as architectural lighting and automotive, for example.
The organic layers of the OLED are sensitive to oxygen and moisture and needs to be well protected. Flexible ultra-thin glass meets the stringent requirements of a hermetic barrier, free of defects and pinhole freedom for large OLED emissive surfaces.
Fraunhofer FEP has had success not only in applying OLEDs to flexible ultra-thin glass, but also in encapsulating the devices using an additional thin glass layer in a single roll-to-roll manufacturing step. A high-performance adhesive was applied over the entire surface of the encapsulating glass in advance in collaboration with tesa SE.
This adhesive glass film is subsequently laminated to the OLED-coated ultra-thin glass. Fraunhofer FEP will be presenting this type of OLED at AIMCAL 2016, in this case based on G-Leaf™ ultra-thin glass by Nippon Electric Glass Co Ltd. (NEG). A 10 cm × 25 cm emissive surfaces will be on display.
“But encapsulation is not the only challenge for flexible large area OLEDs that need to remain stable over long periods. In order to get them to emit, a highly conductive, transparent oxide layer with good light coupling properties is required and reliable electrical contacts to the emitting layers with low contact resistance is essential," explains Dr. Stefan Mogck, Head of Roll-to-Roll Organic Technology at Fraunhofer FEP. “We are proud of having optimized our process, and that these layers can be applied very homogenously to the flexible glass.”
Making dependable electrical connections to the ultra-thin glass without damaging it was especially challenging. The scientists will be working with customers in the future on non-destructive techniques of integration.
Fraunhofer FEP offers its industrial partners process and product development over the complete value chain customized to their requirements. Processes for treatment and coating flexible glass for customer-specific emissive surfaces in different sizes and colors can be developed, and even flexible OLED prototypes fabricated at customers’ requests. In addition, the Institute can develop matching driver circuitry for supplying power to the prototypes.
Fraunhofer FEP at AIMCAL 2016
Monday, May 30
Session: Coating and Laminating Short Course
13:30 – 17:00, Location: Bellevue I
Oliver Miesbauer, Fraunhofer IVV / Dr. rer. nat. John Fahlteich, Fraunhofer FEP
Tuesday, May 31
Track: Web Coating and Web Handling,
Session: Web Surface / Barrier
14:30 – 15:00, Location: Bellevue I
Surface modification of polyethylene terephthalate (PET) and oxide coated PET for adhesion improvement
Juliane Fichtner, Fraunhofer FEP
Session: Sputtering, Coating Equipment, Inline control
16:00 – 16:30, Location: Bellevue II
Adapted particle bombardment during layer growth by pulse magnetron sputtering
Dr. rer. nat. Daniel Glöß, Fraunhofer FEP
Wednesday, June 1
Session: Pretreatment, Substrate Film, Simulation
10:30 – 11:00, Location: Bellevue II
Vacuum plasma treatment and coating of fluoropolymer webs – challenges and applications
M.Eng. Cindy Steiner, Fraunhofer FEP
Thursday, June 2
Session: New Applications, Emerging Technologies, Capacitors, Photovoltaic
8:30 – 9:00, Location: Bellevue II
New vacuum coating technologies for metal strips and foils
Prof. Dr. rer. nat. Christoph Metzner, Fraunhofer FEP
10:30 – 11:00, Location: Bellevue II
Present status of Roll-to-Roll Fabrication for OLED lighting
Michael Stanel, Fraunhofer FEP
June 1, 2016
Fraunhofer FEP invites you to an exciting tour to our labs: applied R&D for the industry at its best. During the tour, we will present pilot scale experimental coating equipment, e.g. MAXI (in-line vacuum coating for metal strips and sheets), coFlex® 600 (roll-to-roll pilot sputter roll coater), novoFlex® 600 (roll-to-roll pilot coater), atmoFlex (non-vacuum roll to roll coating and electron beam surface treatment) and a roll-to-roll process line for the deposition of OLED.
Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP | Phone +49 351 2586 452 | Annett.Arnold@fep.fraunhofer.de
Winterbergstraße 28 | 01277 Dresden | Germany | www.fep.fraunhofer.de
Annett Arnold | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP
Researchers use light to remotely control curvature of plastics
23.03.2017 | North Carolina State University
TU Graz researchers show that enzyme function inhibits battery ageing
21.03.2017 | Technische Universität Graz
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
27.03.2017 | Earth Sciences
27.03.2017 | Life Sciences
27.03.2017 | Life Sciences