Scientists at Durham University have made a discovery that could help ease one of OLED’s biggest pain points. Traditionally, developing blue OLEDs that strike a desirable balance between stability and energy-efficiency has been a challenge, often requiring OLED developers to sacrifice one side of the equation for the other. The team at Durham University have found that unconventional materials could hold the key to higher quality blue OLEDs, and have published their findings in the scientific journal Nature Photonics.
Samsung makes 5-year deal with LG Display for display panels
“We discovered a ‘blind spot’ where materials overlooked by conventional thinking can become highly effective when used as sensitizers in hyperfluorescence OLEDs,” says lead author of the study Kleitos Stavrou.
The research team points to the compound ASCRA as being an ideal candidate material for an OLED sensitizer, or as a component to form a blue terminal emitter.
“This approach reduces exciton energy compared to direct blue emission in devices, allowing more stable, longer-lasting blue OLEDs,” says senior author of the study, Professor Andrew Monkman. “Our findings reveal an unexplored territory for hyperfluorescent OLEDs that could greatly expand material choices for the next generation of displays that will also use up to 30% less electricity.”
