Active Liquid Crystal Tuning of Metallic Nanoantenna Enhanced Light Emission from Colloidal Quantum Dots

被引：47

作者：

Abass, Aimi ^{[1
]}

Rodriguez, Said Rahimzadeh-Kalaleh ^{[2
]}

Ako, Thomas ^{[3
]}

Aubert, Tangi ^{[4
,5
]}

Verschuuren, Marc ^{[6
]}

Van Thourhout, Dries ^{[5
,7
]}

Beeckman, Jeroen ^{[3
,5
]}

Hens, Zeger ^{[4
,5
]}

Rivas, Jaime Gomez ^{[2
,8
]}

Maes, Bjorn ^{[7
,9
]}

机构：

[1] Univ Ghent, Dept Elect & Informat Syst ELIS, Solar Cells Grp, B-9000 Ghent, Belgium

[2] FOM Inst AMOLF, Ctr Nanophoton, Philips Res Labs, NL-5656 AE Eindhoven, Netherlands

[3] Univ Ghent, Dept Elect & Informat Syst ELIS, Liquid Crystals & Photon Grp, B-9000 Ghent, Belgium

[4] Univ Ghent, Dept Inorgan & Phys Chem, Phys & Chem Nanostruct, B-9000 Ghent, Belgium

[5] Univ Ghent, Ctr Nano & Biophoton NB Photon, B-9000 Ghent, Belgium

[6] Philips Res Labs, NL-5656 AE Eindhoven, Netherlands

[7] Univ Ghent, IMEC, Photon Res Grp INTEC, B-9000 Ghent, Belgium

[8] Eindhoven Univ Technol, COBRA Res Inst, NL-5600 MB Eindhoven, Netherlands

[9] Univ Mons, Fac Sci, Micro & Nanophoton Mat Grp, B-7000 Mons, Belgium

来源：

NANO LETTERS | 2014年 / 14卷 / 10期

关键词：

Waveguide; nanoantenna; liquid crystal; quantum dot; fluorescence; SURFACE-PLASMON RESONANCE; DIRECTIONAL EMISSION; REFRACTIVE-INDEXES; LINE-SHAPES; NANOPARTICLES; ARRAYS; DISPERSION; SCATTERING;

D O I：

10.1021/nl501955e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A system comprising an aluminum nanoantenna array on top of a luminescent colloidal quantum dot waveguide and covered by a thermotropic liquid crystal (LC) is introduced. By heating the LC above its critical temperature, we demonstrate that the concomitant refractive index change modifies the hybrid plasmonic-photonic resonances in the system. This enables active control of the spectrum and directionality of the narrow-band (similar to 6 nm) enhancement of quantum dot photoluminescence by the metallic nanoantennas.

引用

页码：5555 / 5560

页数：6

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