Silicon based leds emit multicoloured light
Scientists in Germany have succeeded in creating silicon based leds.
Free of heavy metals and able to emit light in various colours, the SiLEDs are made up of ultra small silicon nanocrystals consisting of a few hundred to thousand atoms.
"Controlled manufacture of diodes emitting multicolour light is an absolutely novelty," claimed Florian Maier-Flaig, a scientist at the Karlsruhe Institute of Technology (KIT), which lead the project alongside the University of Toronto/Canada.
Maier-Flaig and his team were able to adjust the colour of the light emitted by the leds by separating nanoparticles depending on their size.
"This enhanced the stability of the sensitive thin film components," Maier-Flaig noted. "Our leds have a surprising long term stability that has not been reached before."
