We report solution-processed growth of zinc-alloyed silver–indium-sulfide (AIZS) nanocrystals followed
by fabrication and characterization of light-emitting diodes (LEDs) based on such nanostructures. While
growing the low dimensional crystals, we vary the ratio between the silver and zinc contents that in turn
tunes the bandgap and correspondingly their photoluminescence (PL) emission. We also dope the AIZS
nanocrystals with manganese, so that their PL emission, which appears due to a radiative transition
between the d-states of the dopants, becomes invariant in energy when the diameter of the quantum
dots or the dopant concentration in the nanostructures varies. The LEDs fabricated with such undoped
and manganese-doped AIZS nanocrystals emit electroluminescence (EL) that matches the PL spectrum of
the respective nanomaterial. The results demonstrate examples of quantum dot LEDs (QDLEDs) based on
nontoxic AIZS nanocrystals.
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