Abstract
The demonstration of the quantum confinement effect in colloidal quantum dots (QDs) has been extensively studied and exploited mainly in Pb and Cd chalcogenide systems. There has been an urgent nee...
Highlights
Metal chalcogenide colloidal quantum dots (CQDs) have been extensively studied and employed in a number of applications including light emitting diodes, photodetectors, and photovoltaics
We have carefully monitored the reaction temperature and annealing time to obtain a series of different sizes of AZTS
QDs as manifested by the Transmission electron microscopy (TEM) images shown in Supporting Information Figure S1a−e
Summary
Metal chalcogenide colloidal quantum dots (CQDs) have been extensively studied and employed in a number of applications including light emitting diodes, photodetectors, and photovoltaics. The synthetic routes employed for the synthesis of kesterite NCs have been based on amines or thiols as ligands,[13−15] impeding efficient ligand exchange[16,17] and their application in optoelectronic devices. For this reason, a synthetic strategy is urgently needed for such NCs to overcome the reliance on amine or thiols. We report for the first time the synthesis of amine and thiol-free luminescent AZTS colloidal QDs with size tunable band gap akin to their quantum confined nature
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