Tetrapod-shaped colloidal nanocrystals of II-VI semiconductors prepared by seeded growth.
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.
Fiore
Angela
A
National Nanotechnology Laboratory (NNL) of CNR-INFM, Scuola Superiore ISUFI and IIT Research Unit, Via per Arnesano 16, Km 5, 73100 Lecce, Italy.
Mastria
Rosanna
R
Lupo
Maria Grazia
MG
Lanzani
Guglielmo
G
Giannini
Cinzia
C
Carlino
Elvio
E
Morello
Giovanni
G
De Giorgi
Milena
M
Li
Yanqin
Y
Cingolani
Roberto
R
Manna
Liberato
L