The new phosphors glow in blue and orange when triggered by ultraviolet light (Photo: Marcin Szczepanski, U-M College of Engineering)
The new phosphors glow yellow and green when triggered by ultraviolet light (Photo: Marcin Szczepanski, U-M College of Engineering)
Organic light-emitting diodes (OLEDs) are a technology that shows great promise, as they are thinner, lighter, and less expensive to manufacture than their non-organic LED counterparts. Despite their name, however, they are not fully organic, as small amounts of precious metals are required to make them glow. A completely organic and even cheaper alternative could be on its way, though ... researchers from the University of Michigan have created metal-free organic crystals that shine with phosphorescence – until now, only non- or semi-organic compounds have displayed this property.
Other Images from this Gallery