White Light Generation With Cdse/Zns Core-Shell Nanocrystals And Ingan/Gan Light Emitting Diodes

We present hybrid white light sources that integrate CdSe/ZnS core-shell nanocrystals on blue InGaN/GaN light emitting diodes (LED). We report on the demonstrations of white light generation using yellow nanocrystals (lambda(PL)=580 nm) hybridized on a blue LED (lambda(EL)=440 nm) with tristimulus coordinates of x=0.37 and y=0.25, correlated color temperature of T-c=2692 K, and color rendering index of R-a=14.6; cyan and red nanocrystals (lambda(PL)=500 nm and 620 nm) on a blue LED (lambda(EL)=440 nm) with x=0.37, y=0.28, T-c=3246 K, and R-a=19.6; and green, yellow, and red nanocrystals (lambda(PL)=540 nm, 580 nm, and 620 nm) on a blue LED (lambda(EL)=452 nm) with x=0.30, y=0.28, T-c=7521 K, and R-a=40.9.