Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1547211 | Physica E: Low-dimensional Systems and Nanostructures | 2007 | 4 Pages |
Abstract
We demonstrate catalytic and seeded shape-selective growth of CdSe nanostructures by a steady-state vapor-transport process. By varying the powder and sample temperatures, we observe a transition from a regime where catalytic growth is dominant to a metal-free self-induced nucleation regime. We then show that the best structural and optical quality are obtained by using CdSe colloidal nanocrystals as seeds for metal-free growth, as indicated by electron microscopy, X-ray diffraction and photoluminescence.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
A. Fasoli, A. Colli, S. Kudera, L. Manna, S. Hofmann, C. Ducati, J. Robertson, A.C. Ferrari,