Press Release 085/2011

SiMoNa Optimizes Organic Light-emitting Diodes

Researchers Develop Method to Simulate Customized OLEDs / Startup of KIT
Flexibel und rollbar: So könnten die Bildschirme der Zukunft aussehen. Dazu sind OLEDs mit genau abgestimmten Eigenschaften erforderlich.  (Bild: Christian Gruppe und Willi Müller)
Flexible and rollable: This is what screens may be like in the future. They will need OLEDs with precisely adjusted properties. (Photo: Christian Gruppe and Willi Müller)

Mobile phones, flat screens or illumination systems – organic light-emitting diodes will be applied to an increasing extent in the future and open up new design and function options. Scientists of the KIT Institute of Nanotechnology (INT) have now developed a simulation method for the low-cost optimization of OLEDs within shorter time. By means of SiMoNa, material properties can be improved specifically and appropriate dye molecules can be designed and patented. The NanoMatch startup will be established this month.  
OLEDs are already used in the displays of mobile phones. In the future, multilayered organic light-emitting diodes are expected to replace conventional technologies in other illumination applications as well. As they are ultraflat, ultralight, and highly energy-efficient, they open up completely new options, including rolling screens on moldable carrier materials. If such technologies are to be highly efficient and available at low costs, the OLEDs will have to be optimized prior to production. So far, numerous experiments have been needed for this purpose as well as in many other fields of organic electronics.

Researchers of the team directed by Professor Dr. Wolfgang Wenzel and Professor Dr. Mario Ruben from the Institute of Nanotechnology and by Dr. Robert Maul from the Institute for Theoretical Solid-State Physics (TFP) of KIT have now developed intelligent software to simulate molecular processes in an OLED on the computer. Using SiMoNa, electronic properties and performance characteristics of OLEDs can be optimized at low costs within a shorter period of time.    

In May 2011, NanoMatch (, a startup of KIT, will take up operation with the support of the KIT Innovation Management Service Unit (IMA), the Center for Innovation and Entrepreneurship (CIE) of KIT, and the initiative. NanoMatch will adapt and apply this novel simulation technology developed by KIT.

SiMoNa stands for “Simulation of Molecular Nanostructures”. For the first time, this method combines the structural prognosis of the material on a molecular basis with a quantum mechanics analysis of the resulting function. Compared to conventional approaches to determining the morphology, simulation speed is increased by a factor of about a million. Based on the three-dimensional structure of the system obtained, the mobility of charge carriers can be predicted by means of quantum mechanics calculations.

The new software can simulate highly specific material compositions and predict charge transfer also in unknown substance classes for which experimental data are still lacking. Hence, SiMoNa is suited for the design and early patenting of specific components for OLEDs and the optimization of known OLED components in terms of functioning and performance.  

From virtual optimization, the developers derive major parameters for prototypes of organic light-emitting diodes. These data are used as a basis of special chemicals and basic substances of OLEDs tailored to novel applications. The advantages of SiMoNa are the simulation-based shortening of OLED development cycles and earlier commercialization based on these simulation results.

Further information can be found at:
A short film is available at: KIT LINK

Being “The Research University in the Helmholtz Association”, KIT creates and imparts knowledge for the society and the environment. It is the objective to make significant contributions to the global challenges in the fields of energy, mobility, and information. For this, about 9,600 employees cooperate in a broad range of disciplines in natural sciences, engineering sciences, economics, and the humanities and social sciences. KIT prepares its 23,300 students for responsible tasks in society, industry, and science by offering research-based study programs. Innovation efforts at KIT build a bridge between important scientific findings and their application for the benefit of society, economic prosperity, and the preservation of our natural basis of life. KIT is one of the German universities of excellence.

or, 24.05.2011


Monika Landgraf
Head of Corporate Communications, Chief Press Officer
Phone: +49 721 608-41150
Fax: +49 721 608-43658
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Contact for this press release:

Monika Landgraf
Press Officer
Phone: +49 721 608-21150
Fax: +49 721 608-41150
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