Abstract

Subject of study. Nonradiative energy transfer between donor and acceptor centers located in the vicinity of a spherical nanoparticle with a dielectric core and a metallic shell are studied. Aim of study. We present theoretical research on nonradiative energy transfer in a system consisting of a nanoparticle reflector with a dielectric core and a metal shell; a donor that may be an organic molecule or quantum dot; and an acceptor that may be another molecule, quantum dot, or nanoparticle with highly dissipative properties. Methods. A quantum mechanical and electrodynamic model was developed in order to calculate the energy transport rate; the electrodynamic model is also valid in the presence of an external magnetic field. Main results. We determine the system parameters that will maximize the efficiency of energy transfer between system components. We show that, under resonant conditions, the energy transfer rate from the donor to the acceptor in the presence of a relay nanoparticle is up to 3 orders of magnitude higher than it is in the case of a homogeneous dielectric medium free of nanoparticles. Practical significance. These results have a variety of practical applications, especially in the development of photoelectronic devices based on plasmon-accelerated energy transfer between components of a functional nanosystem.

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