Epitaxial CdSe-Au nanocrystal heterostructures by thermal annealing.
The thermal evolution of a collection of heterogeneous CdSe-Au nanosystems (Au-decorated CdSe nanorods, networks, vertical assemblies) prepared by wet-chemical approaches was monitored in situ in the transmission electron microscope. In contrast to interfaces that are formed during kinetically controlled wet chemical synthesis, heating under vacuum conditions results in distinct and well-defined CdSe/Au interfaces, located at the CdSe polar surfaces. The high quality of these interfaces should make the heterostructures more suitable for use in nanoscale electronic devices.
Figuerola
Albert
A
Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
van Huis
Marijn
M
Zanella
Marco
M
Genovese
Alessandro
A
Marras
Sergio
S
Falqui
Andrea
A
Zandbergen
Henny W
HW
Cingolani
Roberto
R
Manna
Liberato
L