LondonThis green organic LED (OLED) does not shift color when tilted.
Ordinary narrowband OLEDs drift hue off-angle, a flaw in every tilted phone or headset screen.
Researchers coupled the emitter to a light-matter layer, hybridizing them so color purity comes from coupling, not filtering.
The design reached over 20% efficiency, more than doubling prior polariton OLED performance.
Sources: Nature