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

被引：6
作者：
Chandra, Subhash [1 ]
Ahmed, Hind [1 ]
McCormack, Sarah [1 ]
机构：
[1] Univ Dublin, Trinity Coll Dublin, Sch Engn, Dept Civil Struct & Environm Engn, Dublin D02 PN40, Ireland
来源：
OPTICS EXPRESS | 2020年 / 28卷 / 14期
基金：
欧盟地平线“2020”; 欧洲研究理事会;
关键词：
GOLD NANORODS; FLUORESCENCE; EMISSION; NANOPARTICLES; ENHANCEMENT; EFFICIENCY; INTENSITY; ALIGNMENT; EMITTERS; DECAY;
D O I：
10.1364/OE.394560
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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 x10(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. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：20191 / 20204
页数：14
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