A research project led by the University of St. Andrews’ School of Physics and Astronomy and School of Chemistry has the potential to revolutionize the efficiency of televisions, computer screens, and lighting systems. Researchers at the Organic Semiconductor Centre have developed a novel approach to designing light-emitting materials that maintain high efficiency at high brightness levels, known as ‘efficiency roll-off.’
Their work, published in the journal Nature, aims to address a key challenge faced by the latest generation of emitter materials in organic light-emitting diodes (OLEDs). These materials are commonly used in mobile phone displays, smartwatches, some televisions, and automotive lighting systems. However, their efficiency decreases at higher brightness levels required for lighting and outdoor applications.
Professors Ifor Samuel and Eli Zysman-Colman have developed guidelines to help OLED researchers create materials that maintain high efficiency at high brightness. Their advancement opens up opportunities for the latest materials to be used in displays, lighting, and medical applications. Professor Zysman-Colman highlighted that their research findings provide a clearer understanding of the connection between emitter material properties and OLED performance. Professor Samuel added that their new approach will contribute to the development of bright, efficient, and colorful OLEDs that consume less power. With their work recognized by Nature, there is optimism for industrial interest in implementing these advancements to achieve more efficient and cost-effective LEDs in various applications.
