Open AccessPolarization-sensitive anisotropic plasmonic properties of quantum dots and Au nanorod composites
Author(s) -
Sudhir Chandra,
Hind Ahmed,
Sarah McCormack
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.394560
Subject(s) - plasmon , nanorod , materials science , polarization (electrochemistry) , anisotropy , quantum dot , optoelectronics , optics , electric field , nanotechnology , physics , chemistry , quantum mechanics
Polarization-sensitive anisotropic plasmonic interaction between gold nanorods (AuNRs) and quantum dots (QDs) encapsulated in an epoxy resin polymer has been experimentally investigated. The anisotropic plasmonic interaction utilized the polarization-dependent plasmonic properties of aligned AuNR in AuNR-QD composite. AuNRs were aligned by an external AC electric field of 3.5 ×10 5 Vm -1 . The plasmonic interaction modified QD absorption and emission dependent on excitation light polarization and maximum enchantment of 10% and 59%, respectively. Moreover, anisotropic plasmonic interaction induced directional emission of QDs has improved emission decay rate by 20% and modulated emission polarization ratio of out-of-plane (vertical) and in-plane (horizontal) from 1 to 0.84.