Theory of resonance energy transfer involving nanocrystals: the role of high multipoles

Details Theory of resonance energy transfer involving nanocrystals: the role of high multipoles Theory of resonance energy transfer involving nanocrystals: the role of high multipoles

2007-11-20

arxiv.org/abs/0711.3178v1

Physics

Condensed Matter

Materials Science

12 pages, 7 figures

Scientific paper

10.1063/1.2913247

A theory for the fluorescence resonance energy transfer (FRET) between a pair of semiconducting nanocrystal quantum dots is developed. Two types of donor-acceptor couplings for the FRET rate are described: dipole-dipole (d-d) and the dipole-quadrupole (d-q) coupling. The theory builds on a simple effective mass model which is used to relate the FRET rate to measureable quantities such as the nanocrystal size, fundamental gap, effective mass, exciton radius and dielectric constant. We discuss the relative contribution to the FRET rate of the different multipole terms, the role of strong to weak confinement limits, and the effects of nanocrystal siz-es.

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