White light generation using CdSe/ZnS core–shell nanocrystals hybridized with InGaN/GaN light emitting diodes

Abstract

We introduce white light generation using CdSe/ZnS core-shell nanocrystals of single, dual, triple and quadruple combinations hybridized with InGaN/GaN LEDs. Such hybridization of different nanocrystal combinations provides the ability to conveniently adjust white light parameters including the tristimulus coordinates (x, y), correlated colour temperature (T c ) and colour rending index (R a ). We present the design, growth, fabrication and characterization of our white hybrid nanocrystal-LEDs that incorporate combinations of (1) yellow nanocrystals ( PL = 580 nm) on a blue LED ( EL = 440 nm) with (x, y) = (0.37, 0.25), T c = 2692 K and R a = 14.69;