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
Li-Fi communication module wirelessly transfers data at 1-Gbps
October 31, 2014
The Fraunhofer Institute for Photonic Microsystems IPMS in Dresden has developed communication modules that can wirelessly ...
Digital Lumens raises USD23m for intelligent LED lighting solution
Bosch brings electronic fuel system, connectivity to Asian motorbikes
NXP extends NFC ecosystem to the car
Japan's MegaChips to buy MEMS maker SiTime
Freescale CEO: 'IoT isn't just buzz'
October 30, 2014
Coming after the solid third quarter results that produced higher operating margins and improving cash flow, Freescale Semiconductor's ...
3D prints world's best inverter
Research project significantly improves electronics reliability
Netscout Acquires Communications Businesses From Danaher
- Wireless Power User Guide
- Secure is the New Smart
- 5 Best Practices for Designing Flexible Test Stations
- Intelligent PLCs Expand the Internet of Things
InterviewFreescale CEO: 'IoT isn't just buzz'
Coming after the solid third quarter results that produced higher operating margins and improving cash flow, Freescale Semiconductor's CEO Gregg Lowe had every reason to be chipper and lively when EE Times ...
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, Oscium is giving away three of its iMSO-204L dual analogue iOS oscilloscopes, worth USD400 each. Designed with native Lightning compatibility, the iMSO-204L transforms the iPad, iPhone, and iPod touch into an ultra-portable, two-channel oscilloscope.
Since Apple changed its connector, Oscium has been working to bring native compatibility to its customers. The third generation...MORE INFO AND LAST MONTH' WINNERS...
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.