October 25, 2013

Nanoscale engineering boosts performance of quantum dot light emitting diodes


Quantum dots are nano-sized semiconductor particles whose emission color can be tuned by simply changing their dimensions.

Making the light at the end of the tunnel more efficient

Dramatic advances in the field of quantum dot light emitting diodes (QD-LEDs) could come from recent work by the Nanotechnology and Advanced Spectroscopy team at Los Alamos National Laboratory.

Quantum dots are nano-sized semiconductor particles whose emission color can be tuned by simply changing their dimensions. They feature near-unity emission quantum yields and narrow emission bands, which result in excellent color purity. The new research aims to improve QD-LEDs by using a new generation of engineered quantum dots tailored specifically to have reduced wasteful charge-carrier interactions that compete with the production of light.