OUR TADF TECHNOLOGY PLATFORM

Our highly efficient OLED materials are based on the TADF (thermally activated delayed fluorescence) technology, enabling highest OLED performance: TADF combines the advantages of phosphorescence (high efficiency) and fluorescence (lifetime). CYNORA’s materials are designed to withstand the electrical stress within the OLED and are thus ideally suited for stable and efficient blue emitters. By using them in an OLED device, the power consumption of the OLED display can be significantly reduced. The TADF technology can be used efficiently for all OLED colors red, green and blue, which has not been accomplished so far by any other technology.

TADF for OLED displays. Learn more

Advantages of TADF

Compatible with the current production processes

Higher display resolution

Reduced power consumption and longer battery operation

Metal-free materials

Patent protected materials

2x longer battery operation in portable displays

The TADF technology covers different approaches

In general, the TADF technology can be used in two different approaches: either the TADF material acts as emitter in the Self-emitting (also called the classical) TADF approach, or together with a co-emitter in the Co-emitting (also called Hyper) approach.

The classical approach has the advantage that it is rather simple since it includes only two materials in the emissive layer: a host material and the TADF emitter.

The co-emitting approach can be used, when a high color purity in the OLED display is crucial. In this system, instead of emitting from the TADF material, the energy is transferred to the co-emitter, which finally emits the light of the OLED device. In both cases, the TADF material is the key to high-efficiency as it is determining the efficiency, while co-emitter is giving the right color. The co-emitter can be chosen in such a way that it delivers the spectral requirements of the pixel. For example, fluorescent emitters can be used, which deliver a narrow spectrum resulting in a high color purity. The co-emitting TADF OLED is clearly superior to the classical fluorescent OLED, since the TADF emitter guarantees for a much higher efficiency of the device, while color purity is maintained by the fluorescent emitter.

Why efficient blue emitters?

Due to the lower efficiency of the widely used blue fluorescent emitters, today´s blue OLED pixels consume much more power than the red and green ones. Using CYNORA´s high efficiency blue emitters, the power consumption will be significantly decreased, leading to a considerably longer battery life for the consumer.

In order to gain sufficient brightness in the OLED displays, using inefficient fluorescent emitters, relatively large blue pixel areas are required. In a smartphone, which contains red, green, and blue pixels, the blue pixel makes up to ~50% of the total area. By the use of our far more efficient blue emitters, OLED panel makers could significantly reduce the size of the blue pixels. The direct result is a higher display resolution.

Therefore, high efficiency in blue OLED emitters enable a significant reduction of the overall display power consumption and higher display resolution. A highly efficient blue is the most requested material by OLED display makers.

Why a Deep Green Color Point ?

CYNORA’s TADF Deep Green emitter systems will enable a much higher color purity of the green pixel when compared to state-of-the-art phosphorescent-based green emitters. This will allow a color gamut beyond DCI-P3 to be achieved, as well as broad coverage of the BT.2020 color space. The innovation will bring the OLED industry closer to reaching the new display standards for ultra-high-definition televisions (UHDTVs).

CYNORA’s development based on artificial intelligence

In an OLED, efficient TADF emitters are achieved in an integrated system of the emitter itself and its surrounding materials, the host and transport materials. CYNORA is developing such systems with its customers and partners. Our R&D covers all development aspects in a connected closed-loop approach from the simulation of the materials to device fabrication and testing, constantly collaborating with customers at all development stages. This efficient approach promises a faster path to provide the best material set for the customer.

Simulation

CYNORA’s interdisciplinary simulation team is represented by highly-skilled specialists trained in different fields of natural science and computer science. Our tasks are arranged around the scientific needs of CYNORA and aim at supporting the research process at every single step.  We combine  advanced theoretical methods from quantum chemistry with state-of-the art tools from artificial intelligence to provide the best solutions for CYNORA in a timely manner. Using our modern in-house computer facility, we bridge the gap between experiment and theory while thereby creating the essential basis for novel OLED-technologies.

Synthesis

The synthesis division is responsible for delivering our electronic grade ultra-pure organic functional materials for our research and development, as well as for our customers. We have gained operational excellence for high-throughput syntheses, and have installed several tools for real-time monitoring of synthesis KPIs via web-based data monitoring. Thanks to our team of synthesis experts, we can handle high-complex synthetic routes towards our target materials. Our in-house scale-up expertise enables us to directly deliver our lead candidates to our customers. Depending on the requirements, synthesis of up to several hundred grams is possible. At the end of the material synthesis, sublimation steps are performed to achieve the highest possible purity for vacuum-based processing.

Detailed material analytics

The analytics department in CYNORA takes care of all important chemical and photophysical analyses of all in-house produced materials. We apply highest quality standards to ensure the accuracy and reliability of these results.

Our methods include measurements to characterize our emitter materials for their required high-level purity, quantum efficiency, energetical properties, and color, amongst others. We also use various steady-state and time-resolved photoluminance measurements to gain deeper insight into our materials. Our laser lab is equipped to capture ultrafast processes and material interactions needed for a better understanding. The combined input provides important information to carry out structure-property relationships, and select the right materials for our device fabrication and testing.

In addition to these highest quality measurements, we regularly carry out method developments and implement new analytical procedures to obtain even more information about our materials.

Device optimization and fabrication

The device optimization and fabrication divisions are equipped to drive the best in-device performance for our internally developed proprietary emissive materials. Our in-depth knowledge in device physics and core competence in translating structure-property relations into device performance allow us to identify the next generation display materials effectively. We enable future display applications by understanding root-causes of device behavior due to stack design and consequent methodology in our design of experiments. The utilization of state-of-the-art fabrication tools and processes further help us meet customer requirements.