ELECTRODEPOSITED QUANTUM DOTS .2. HIGH-RESOLUTION ELECTRON-MICROSCOPYOF EPITAXIAL CDSE NANOCRYSTALS ON (111) GOLD

CdSe quantum dots, electrodeposited epitaxially on {111} gold substrat es, were studied by high resolution transmission electron microscopy ( HREM). Images corresponding to wurtzite {10.0}CdSe and {11.0}CdSe as w ell as {220}Au and 1/3{422}Au, directly confirmed the epitaxial relati onships previously shown by electron diffraction, namely {111}Au paral lel-to {00.1}CdSe and [110]Au parallel-to [11.0]CdSe. Further analysis of the HREM images by optical diffraction (selected-area nanodiffract ion) provided structural information on the orientation of single nano crystals with respect to the substrate and allowed detection of slight misalignments of individual quantum dots.