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New Research Could Lead to More Efficient Televisions, Computer Screens and Lighting

May 11, 2024
in Science
New Research Could Lead to More Efficient Televisions, Computer Screens and Lighting
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By University of St. Andrews May 10, 2024

Organic Light Emitting Diode

New research from the University of St Andrews offers potential solutions for improving the efficiency of OLEDs at high brightness levels, broadening their application in technology and medicine. Credit: Professor Ifor Samuel

New interdisciplinary research from the University of St Andrews has the potential to enhance the efficiency of televisions, computer screens, and lighting systems.

Researchers at the Organic Semiconductor Centre in the School of Physics and Astronomy, and the School of Chemistry have proposed a new approach to designing efficient light-emitting materials in a paper recently published in Nature.

Light-emitting materials are used in organic light-emitting diodes (OLEDs) that are now found in the majority of mobile phone displays and smartwatches, and some televisions and automotive lighting.

Overcoming Efficiency Challenges

The latest generation of emitter materials under development produce OLEDs that have high efficiency at low brightness, but suffer reduced efficiency as the brightness is increased to the levels required for lighting and outdoor applications. This problem is known as ‘efficiency roll-off’.

Researchers have identified the combination of features of materials required to overcome this problem. Guidelines developed by the team of researchers, led by Professor Ifor Samuel and Professor Eli Zysman-Colman, will help OLED researchers develop materials that maintain high efficiency at high brightness, enabling the latest materials to be used for applications in displays, lighting, and medicine.

Commenting on the research, Professor Zysman-Colman explained that the findings “provide clearer insight into the link between the properties of the emitter material and the performance of the OLED.”

Professor Samuel said, “Our new approach to this problem will help to develop bright, efficient, and colorful OLEDs that use less power.”

Reference: “A figure of merit for efficiency roll-off in TADF-based organic LEDs” by S. Diesing, L. Zhang, E. Zysman-Colman and I. D. W. Samuel, 27 March 2024, Nature.
DOI: 10.1038/s41586-024-07149-x

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Copyright for syndicated content belongs to the linked Source : SciTechDaily – https://scitechdaily.com/new-research-could-lead-to-more-efficient-televisions-computer-screens-and-lighting/

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