Review of the synthetic chemistry involved in the production of core/shell semiconductor nanocrystals

Joel Van Embden, Jacek Jasieniak, Daniel E. Gómez, Paul Mulvaney, Michael Giersig

Research output: Contribution to journalArticleResearchpeer-review

108 Citations (Scopus)

Abstract

Passivation of CdSe semiconductor nanocrystals can be achieved by overcoating the particles with a homogeneous shell of a second semiconductor. Shell layers are grown in monolayer steps to ensure homogeneous growth of the shell. The relative band edges of the two materials determine the photoreactiveity of the resultant core-shell nanocrystals. The critical role of ligands in minimizing nucleation of the shell material during the growth of the passivating layer is emphasized. The delocalization of charge carriers into the shell layers can be followed spectroscopically during the growth processes. The relative spectral shifts are directly correlated to the relative energies of the band edges.

Original languageEnglish
Pages (from-to)457-471
Number of pages15
JournalAustralian Journal of Chemistry
Volume60
Issue number7
DOIs
Publication statusPublished - 2 Aug 2007
Externally publishedYes

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