Brighter, Cheaper Blue Light could Revolutionize Screen Technology
taylorvich writes:
https://phys.org/news/2024-03-brighter-cheaper-blue-revolutionize-screen.html
Researchers have found a new way to simplify the structure of high-efficiency blue organic light-emitting diodes (OLEDs), which could lead to longer-lasting and higher definition television screens.
OLEDs are a class of organic electronics that are already found commercially in smartphones and displays and can be more efficient than competing technologies.
Although OLED television screens have vivid picture quality, they also have drawbacks such as high cost and comparatively short lifespans.
[...] An OLED is built like a sandwich, with organic semiconductor layers between two electrodes. In the middle of the stack is the emissive layer, which lights up when powered with electricity. Electrical energy goes into the molecules, which then release this extra energy as light.
More information: Hwan-Hee Cho et al, Suppression of Dexter transfer by covalent encapsulation for efficient matrix-free narrowband deep blue hyperfluorescent OLEDs, Nature Materials (2024). DOI: 10.1038/s41563-024-01812-4
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