Electrodeposited quantum dots. II. High resolution electron microscopy of epitaxial CdSe nanocrystals on {111} gold Academic Article uri icon

abstract

  • CdSe quantum dots, electrodeposited epitaxially on {111} gold substrates, were studied by high resolution transmission electron microscopy (HREM). Images corresponding to wurtzite {10.0} CdSe and {11.0} CdSe as well as {220} Au and 1 3 {422} Au , directly confirmed the epitaxial relationships previously shown by electron diffraction, namely {111} Au ‖{00.1} CdSe and 〈110〉 Au ‖〈11.0〉 CdSe . Further analysis of the HREM images by optical diffraction (selected-area nanodiffraction) provided structural information on the orientation of single nanocrystals with respect to the substrate and allowed detection of slight misalignments of individual quantum dots.

publication date

  • January 1, 1994