Multinary quantum dots are promising heavy metal free alternatives in energy harvesting and light emitting devices (LEDs). Typical synthesis of multinary compounds requires careful balancing of cations reactivity by selection of proper ligands molecules. Selection of the ligands also determines the process solvent, charge mobility and finally the functionality of the device. Several works have examined effect of ligand type on charge recombination dynamics in nanoparticles composed of heavy metal ions (i.e. Pb, Cd). However this information is missing for multinary nanoparticles. Moreover, although synthesis of water or ethanol soluble nanoparticles is environmentally and economically preferable most of the research focus on nanoparticles that are dissolved in high hydrophobic solvents. In this work, we examine different approaches (with and without ligand exchange) for synthesize of water or ethanol soluble Cu-In-Zn-S (CIZS) alloyed nanoparticles. Subsequently, we utilize transient absorption measurements to examine charge transfer kinetics between the nanoparticles in polar solvents and films. And discuss the correlation between the fundamental optical and charge transfer properties to the performance of the devices.

CuInS<sub>2</sub>-ZnS-based electro optic devices: Surface, surface and surface

253rd National Meeting (2017)

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CuInS2-ZnS-based electro optic devices: Surface, surface and surface

CuInS₂-ZnS-based electro optic devices: Surface, surface and surface