Quantum dots with a III-V core and an alloyed II-VI external shell Ghent University
The present invention relates to quantum dots (1) with a core (2) of lll-V material, a first layer (3) of ll-VI material and an external shell (4) of ll-VI material to be used, for example, in downconverters. The external shell (4) is preferably made of an alloy of Zn and Cd with Se or S. The inventors have demonstrated that introducing a small amount of Cd in the external shell provides excellent absorbance performance in blue, violet and UV wavelengths. The amount of Cd needed for this increase in absorbance can be very low. The inventors have shown that the emitted light can be nearly ...