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Merck

Ion exchange synthesis of III-V nanocrystals.

Journal of the American Chemical Society (2012-11-30)
Brandon J Beberwyck, A Paul Alivisatos
ABSTRACT

III-V nanocrystals displaying high crystallinity and low size dispersity are difficult to access by direct synthesis from molecular precursors. Here, we demonstrate that cation exchange of cadmium pnictide nanocrystals with group 13 ions yields monodisperse, crystalline III-V nanocrystals, including GaAs, InAs, GaP, and InP. This report highlights the versatility of cation exchange for accessing nanocrystals with covalent lattices.

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Sigma-Aldrich
Gallium arsenide, (single crystal substrate), <100>, diam. × thickness 2 in. × 0.5 mm