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 contr...

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Bibliographic Details
Published in:Nano letters 2010-08, Vol.10 (8), p.3028-3036
Main Authors: Figuerola, Albert, Huis, Marijn van, Zanella, Marco, Genovese, Alessandro, Marras, Sergio, Falqui, Andrea, Zandbergen, Henny W, Cingolani, Roberto, Manna, Liberato
Format: Article
Language:English
Subjects:
Applied sciences
Chemical synthesis methods
Cross-disciplinary physics: materials science
rheology
Electronics
Exact sciences and technology
Materials science
Methods of nanofabrication
Molecular electronics, nanoelectronics
Nanocrystalline materials
Nanoscale materials and structures: fabrication and characterization
Nanotubes
Physics
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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Summary: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.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl101482q