(Image: Marcin Szczepanski, U-M College of Engineering)
These glowing crystals could one day light up your TV screen - and save you money. Developed by researchers at the University of Michigan, they can shine blue, green, yellow or orange when exposed to ultraviolet light. The crystals could be used to improve organic light-emitting diodes (OLEDs), which are found in some small mobile phone screens but are too expensive to use in larger displays.
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Current OLEDs require small amounts of metal in order to emit light, but these new crystals rely purely on organic non-metallic elements, reducing costs. It's the first ever organic material to shine with phosphorescence, a type of light emission found in glow-in-the-dark paints.
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