Low driving voltage blue, green, yellow, red and white phosphorescent organic light-emitting diodes (OLEDs) with a common simply double emitting layer (D-EML) structure are investigated.

The demonstration of green semiconductor laser diodes with lifetimes of many thousands of hours 1 (similar to that of their blue and red counterparts ... also led to large-area full-colour ...

Light-emitting diodes based on group ... These are a blue LED with yellow phosphors; an ultraviolet LED with blue and yellow phosphors (or red, green and blue phosphors); and a device that ...

We have achieved high color purity luminescence through ... In the present work, we developed red, green, and blue quantum dot light-emitting diodes. Furthermore, we improved the light-emitting ...