Open AccessPlasmon-enhanced Förster energy transfer between semiconductor quantum dots: multipole effects
Author(s) -
Xiong-Rui Su,
Wei Zhang,
Li Zhou,
Xiaoniu Peng,
QuQuan Wang
Publication year - 2010
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.006516
Subject(s) - plasmon , quantum dot , multipole expansion , photoluminescence , materials science , semiconductor , acceptor , optoelectronics , nanoparticle , surface plasmon , ellipsometry , molecular physics , optics , monolayer , surface plasmon resonance , nanotechnology , condensed matter physics , physics , thin film , quantum mechanics
We experimentally demonstrated plasmon-assisted energy transfer (ET) between CdSe semiconductor quantum dots (QDs) self-assembled in a monolayer by using time-resolved micro-photoluminescence (PL) technique. The enhancements of PL intensity and ET efficiency were manipulated by adjusting thickness (Delta) of SiO(2) coating on large Ag nanoparticles. The PL enhancement factor of the acceptor QDs and the PL intensity ratio of acceptor-to-donor reached their maxima approximately 47 and approximately 14 when Delta = 7 nm, the corresponding ET efficiency reached 86%. We also presented theoretical analysis based on the rate equation. The theoretical calculations agreed with experimental data and revealed interesting physics of multipole effect, and metal nanoparticle induced quench effect and plasmon-enhanced Förster ET.