Solution-processed OLEDs printing enables virtually any color
November 02, 2012 // Julien Happich
With a modular system for fine-tuning the solubility and color of OLED emitters, German company Cynora proposes an innovative concept for solution-based manufacturing of OLEDs for displays, lighting and flexible packaging.
This paves the way for creating displays, light panels and flexible luminescent foil that for the most part can be manufactured using printing and coating processes.
With the ability to synthesize new luminescent materials, the company expects to be able to address the entire color spectrum. The modular OLED emitters are copper-based molecules, i.e. metal complexes. These metal complexes consist of a metal core surrounded by a ligand shell that plays a major role in determining the properties of the complex. By modifying the ligands it is possible to precisely modulate key properties such as color and solubility.
“Subtle modification of the structure and their corresponding electronic properties of the ligands enable us to fine-tune the color of the light being generated. And we can do that practically across the entire visible spectrum, from red to green to blue,” Cynora CEO Thomas Baumann explains the research findings. Moreover, the solubility of the building blocks can be adjusted through further modifications as well – an aspect that is of central importance for the fabrication of OLEDs with solution-based processes. “Because manufacturing organic light-emitting diodes involves processing multiple layers on top of each other, it is especially critical that underlying layers are preserved when the new layer is applied,” says Baumann. “That is why it is important to be able to precisely influence the luminescent material's solubility and adjust it to the fabrication process.“
This approach also offers the possibility of turning the applied layers insoluble, effectively preventing undesired blending of the functional layers. This crosslinking is achieved through autocatalytic networking of the copper complexes with a host matrix in the drying stage during processing.
Visit Cynora at www.cynora.comAll news
IoT: sensor fusion or confusion?
July 29, 2014
Jay Esfandyari, ST's director of MEMS product marketing, thinks about sensor fusion and where it can lead.
Next-gen HiFi competition takes place in the car
Rohde & Schwarz acquires IT security company
Pure lithium anode promises more efficient rechargeable batteries
High-temperature superconductivity discovery paves way for energy superhighways
BMW invoke fast battery chargers to spark EV sales
July 28, 2014
BMW has launched the company's i DC Fast Chargers, which claim to be capable of charging the BMW i3 all-electric vehicle’s ...
Study pinpoints how to make Li-ion batteries last longer
Audi, BMW, Daimler drive open source measurement data management
A roadmap for cool and lossless lasers, with Bismuth
- Testing GPS with a Simulator
- DSM presents: Select the best plastic for DDR4
- Dual 13A μModule Regulator with Digital Interface for Remote Monitoring & Control of Power
- Exploring the Business Model Evolution of High-Tech Equipment Manufacturers
InterviewCEO interview: China, not Apple, is way to go, says mCube CEO
Ben Lee, CEO of MEMS startup mCube, explains why he wants to spend $37 million on being a supplier of sensors to Chinese ODMs and avoiding a design win with Apple or Samsung.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Altium Ltd is offering EETimes Europe's readers the chance to win one TASKING VX-Toolset for ARM Cortex-M Premium Edition, normally licensed for 2.395 Euros, for ultra-rapid prototyping and code development around ARM Cortex-M based microcontrollers.
The VX-toolset for ARM is the first TASKING compiler suite to receive the Software Platform technology, which is seamlessly...Read more
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.