title: Tetrapod-shaped colloidal nanocrystals of II-VI semiconductors prepared by seeded growth.
abstract: We report a general synthetic approach to tetrapod-shaped colloidal nanocrystals made of various combinations of II-VI semiconductors. Uniform tetrapods were prepared using preformed seeds in the sphalerite structure, onto which arms were grown by coinjection of the seeds and chemical precursors into a hot mixture of surfactants. By this approach, a wide variety of core materials could be chosen (in practice, most of the II-VI semiconductors that could be prepared in the sphalerite phase, namely, CdSe, ZnTe, CdTe); in contrast, the best materials for arm growth were CdS and CdTe. The samples were extensively characterized with the aid of several techniques.
authors.affiliation: National Nanotechnology Laboratory (NNL) of CNR-INFM, Scuola Superiore ISUFI and IIT Research Unit, Via per Arnesano 16, Km 5, 73100 Lecce, Italy.
authors.forename: Angela
authors.initials: A
authors.lastname: Fiore
authors.forename: Rosanna
authors.initials: R
authors.lastname: Mastria
authors.forename: Maria Grazia
authors.initials: MG
authors.lastname: Lupo
authors.forename: Guglielmo
authors.initials: G
authors.lastname: Lanzani
authors.forename: Cinzia
authors.initials: C
authors.lastname: Giannini
authors.forename: Elvio
authors.initials: E
authors.lastname: Carlino
authors.forename: Giovanni
authors.initials: G
authors.lastname: Morello
authors.forename: Milena
authors.initials: M
authors.lastname: De Giorgi
authors.forename: Yanqin
authors.initials: Y
authors.lastname: Li
authors.forename: Roberto
authors.initials: R
authors.lastname: Cingolani
authors.forename: Liberato
authors.initials: L
authors.lastname: Manna