doi:

DOI: 10.3724/SP.J.1095.2013.30039

Chinese Journal of Applied Chemistry (应用化学) 2013/30:12 PP.1463-1469

Effects of Different Environmental Parameters on the Hydro-thermal Preparation of Cadmium Telluride Quantum Dots


Abstract:
Thiol-stablized cadmium telluride quantum dots(CdTe QDs) were synthesized in aqueous solution. The effects of precursor concentrations and the types of thiol stabilizer were fully investigated and discussed. The variation in the growth rate of aqueous CdTe QDs was further studied to correlate the photophysical properties of the as-prepared CdTe QDs with the types of the added small molecule and macromolecule electrolytes. The experimental results reveal that the nature of the stabilizers and the additives of electrolyte influence significantly on the growth rate of CdTe QDs and hence the fluorescence intensity when compared with the precursor concentrations. The poly(sodium acrylic acid) has a more pronounced deactivating effect on the growth-up of CdTe QDs when compared with sodium acetate, and the growth rate of CdTe QDs is mainly determined by the relative diffusion rate of the monomer.

Key words:cadmium telluride,quantum dots,mercapto-propanoic acid,tiopronin,electrolyte

ReleaseDate:2015-06-08 13:48:06



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