Mechanisms for the shape-control and shape-evolution of colloidal semiconductor nanocrystals
by Peng, X. G.
The shape of CdSe and other semiconductor nanocrystals is controlled, producing dots, rods, rice-shaped particles, tetrapods, or other elongated shapes. Monomer concentration in the growth solution is the determining factor in shape-control and shape-evolution. The elongated shapes could be transformed into more spherical shapes if the monomer concentration in the solution was lowered to a certain level, and spherically shaped nanocrystals could grow to elongated shapes by simply increasing the monomer concentration. The precursors are stable, inexpensive, and relatively non-toxic, and therefore good choices for the growth of nearly monodisperse and shape-controlled nanocrystals.
- Journal
- Advanced Materials
- Volume
- 15
- Issue
- 5
- Year
- 2003
- Start Page
- 459-463
- URL
- https://dx.doi.org/10.1002/adma.200390107
- ISBN/ISSN
- 1521-4095; 0935-9648
- DOI
- 10.1002/adma.200390107