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
Visteon embraces Coqos for open infotainment environments
March 12, 2014
Automotive cockpit system supplier Visteon Electronics will integrate the Coqos software framework into its OpenAir infotainment ...
CEO Interview: Doluca preps Maxim for IoT era
Research focus: 2-D material promises new generation of optoelectronics devices
Road magnets help cars to navigate
Pay rise agreed at NXP
Digi-Key adds XP Power product line
March 12, 2014
Distributor Digi-Key now has a global distribution agreement with XP Power.
Saft lands multi-million euro commercial space battery contract
Thinnest-known LEDs open up new miniaturization horizons
XP Power inks global distribution deal with Digi-Key
- DSM presents: Select the best plastic for DDR4
- Wireless Sensor Network Challenges and Solutions
- Putting FPGAs to Work in Software Radio Systems Handbook
- Real-Time Spectrum Analysis for Troubleshooting 802.11n/ac WLAN Devices
InterviewCEO Interview: Doluca preps Maxim for IoT era
Tunc Doluca, CEO of Maxim Integrated Products Inc. (Sunnyvale, Calif.) since Jan. 1, 2007, discusses his company's building block and application specific approach to the electronics market.
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, Freescale is giving away ten RIoTboards, worth 74 dollars each, for EETimes Europe's readers to win.
Designed to run Android operating systems efficiently or to run under Linux, the board is based on the Freescale i.MX 6Solo processor; using the ARM Cortex-A9 architecture.
And the winner is...
In our previous reader offer, Crystal Display was giving...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.