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General shape control of colloidal CdS, CdSe, CdTe quantum rods and quantum rod heterostructures

General shape control of colloidal CdS, CdSe, CdTe quantum rods and quantum rod heterostructures

Journal of Physical Chemistry. B 109(18): 8538-8542

We report a general synthetic method for the formation of shape-controlled CdS, CdSe and CdTe nanocrystals and mixed-semiconductor heterostructures. The crystal growth kinetics can be manipulated by changing the injection rate of the chalcogen precursor, allowing the particle shape-spherical or rodlike-to be tuned without changing the underlying chemistry. A single injection of precursor leads to isotropic spherical growth, whereas multiple injections promote epitaxial growth along the length of the c-axis. This method was extended to produce linear type I and type II semiconductor nanocrystal heterostructures.

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Accession: 049145653

Download citation: RISBibTeXText

PMID: 16852005

DOI: 10.1021/jp0509008

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