Electronic Coupling and Exciton Energy Transfer in CdTe Quantum-Dot Molecules
Top Cited Papers
- 20 July 2006
- journal article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 128 (32) , 10436-10441
- https://doi.org/10.1021/ja061608w
Abstract
Stable dispersions of molecularlike aggregates of CdTe quantum dots are prepared by chemical cross-linking. Cryo-TEM images confirm the presence of cross-linked quantum dots and show that the size of the small aggregates can be controlled by the amount of cross-linker added. Optical measurements reveal two types of interdot interactions within these quantum-dot molecules: exciton energy transfer and electronic coupling. Quantitative information on the energy transfer rates in quantum-dot molecules is obtained by photoluminescence lifetime measurements. The degree of electronic coupling is dependent on the size of the quantum dots, which is supported by quantum mechanical calculations.Keywords
This publication has 33 references indexed in Scilit:
- Air-Stable All-Inorganic Nanocrystal Solar Cells Processed from SolutionScience, 2005
- Fluorescence resonance energy transfer in doubly-quantum dot labeled IgG systemTalanta, 2005
- Colloidal nanocrystal synthesis and the organic–inorganic interfaceNature, 2004
- Tunneling and Optical Spectroscopy of Semiconductor NanocrystalsAnnual Review of Physical Chemistry, 2003
- Antigen/Antibody Immunocomplex from CdTe Nanoparticle BioconjugatesNano Letters, 2002
- Semiconductor Nanocrystal Assemblies: Experimental Pitfalls and a Simple Model of Particle−Particle InteractionThe Journal of Physical Chemistry B, 2002
- Efficient Near-Infrared Polymer Nanocrystal Light-Emitting DiodesScience, 2002
- Artificial moleculesInternational Journal of Quantum Chemistry, 2002
- Exciton dissociation and interdot transport in CdSe quantum-dot moleculesPhysical Review B, 2001
- Quantum computation with quantum dotsPhysical Review A, 1998