Polarization-sensitive anisotropic plasmonic properties of quantum dots and Au nanorod composites | Zendy

S. Chandra | Zendy; Hind Ahmed | Zendy; Sarah McCormack | Zendy

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Polarization-sensitive anisotropic plasmonic properties of quantum dots and Au nanorod composites

Author(s) -

S. 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.

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