Polyfluorene nanowire active waveguides as sub-wavelength polarized light sources

Deirdre M O'Carroll, Gareth Redmond

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Poly(9,9-dioctylfluorene) conjugated polymer nanowire active waveguides were fabricated by melt-assisted wetting of porous anodic alumina templates. Selected-area electron diffraction studies indicated that the wires were semi-crystalline with a radial orientation of the polymer molecules. Under ultraviolet excitation, the characteristic blue light emission of the polymer was strongly confined within the wires, propagating towards and out-coupling at the nanowire tips. Single wire polarization-resolved photoluminescence data indicated that the nanowire tips essentially acted as sub-wavelength polarized light sources. Detailed optical measurements made on single wires in vacuum and in a polymer host confirmed that the measured emission anisotropy was not an environment-related artefact but was due to radial packing of the polymer molecules within the wires.

Original languageEnglish
Pages (from-to)2468-2473
Number of pages6
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume40
Issue number7
DOIs
Publication statusPublished - May 2008

Fingerprint

Light polarization
polarized light
Nanowires
Light sources
light sources
Waveguides
nanowires
wire
Wire
waveguides
Polymers
Wavelength
polymers
wavelengths
Molecules
Aluminum Oxide
Conjugated polymers
Light emission
optical measurement
Electron diffraction

Keywords

  • Conjugated polymers
  • Nanowires
  • Polyfluorene
  • Waveguides

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Polyfluorene nanowire active waveguides as sub-wavelength polarized light sources. / O'Carroll, Deirdre M; Redmond, Gareth.

In: Physica E: Low-Dimensional Systems and Nanostructures, Vol. 40, No. 7, 05.2008, p. 2468-2473.

Research output: Contribution to journalArticle

@article{27cdbabcb45143eaa4641742b4bccd39,
title = "Polyfluorene nanowire active waveguides as sub-wavelength polarized light sources",
abstract = "Poly(9,9-dioctylfluorene) conjugated polymer nanowire active waveguides were fabricated by melt-assisted wetting of porous anodic alumina templates. Selected-area electron diffraction studies indicated that the wires were semi-crystalline with a radial orientation of the polymer molecules. Under ultraviolet excitation, the characteristic blue light emission of the polymer was strongly confined within the wires, propagating towards and out-coupling at the nanowire tips. Single wire polarization-resolved photoluminescence data indicated that the nanowire tips essentially acted as sub-wavelength polarized light sources. Detailed optical measurements made on single wires in vacuum and in a polymer host confirmed that the measured emission anisotropy was not an environment-related artefact but was due to radial packing of the polymer molecules within the wires.",
keywords = "Conjugated polymers, Nanowires, Polyfluorene, Waveguides",
author = "O'Carroll, {Deirdre M} and Gareth Redmond",
year = "2008",
month = "5",
doi = "10.1016/j.physe.2007.10.009",
language = "English",
volume = "40",
pages = "2468--2473",
journal = "Physica E: Low-Dimensional Systems and Nanostructures",
issn = "1386-9477",
publisher = "Elsevier",
number = "7",

}

TY - JOUR

T1 - Polyfluorene nanowire active waveguides as sub-wavelength polarized light sources

AU - O'Carroll, Deirdre M

AU - Redmond, Gareth

PY - 2008/5

Y1 - 2008/5

N2 - Poly(9,9-dioctylfluorene) conjugated polymer nanowire active waveguides were fabricated by melt-assisted wetting of porous anodic alumina templates. Selected-area electron diffraction studies indicated that the wires were semi-crystalline with a radial orientation of the polymer molecules. Under ultraviolet excitation, the characteristic blue light emission of the polymer was strongly confined within the wires, propagating towards and out-coupling at the nanowire tips. Single wire polarization-resolved photoluminescence data indicated that the nanowire tips essentially acted as sub-wavelength polarized light sources. Detailed optical measurements made on single wires in vacuum and in a polymer host confirmed that the measured emission anisotropy was not an environment-related artefact but was due to radial packing of the polymer molecules within the wires.

AB - Poly(9,9-dioctylfluorene) conjugated polymer nanowire active waveguides were fabricated by melt-assisted wetting of porous anodic alumina templates. Selected-area electron diffraction studies indicated that the wires were semi-crystalline with a radial orientation of the polymer molecules. Under ultraviolet excitation, the characteristic blue light emission of the polymer was strongly confined within the wires, propagating towards and out-coupling at the nanowire tips. Single wire polarization-resolved photoluminescence data indicated that the nanowire tips essentially acted as sub-wavelength polarized light sources. Detailed optical measurements made on single wires in vacuum and in a polymer host confirmed that the measured emission anisotropy was not an environment-related artefact but was due to radial packing of the polymer molecules within the wires.

KW - Conjugated polymers

KW - Nanowires

KW - Polyfluorene

KW - Waveguides

UR - http://www.scopus.com/inward/record.url?scp=43849083685&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=43849083685&partnerID=8YFLogxK

U2 - 10.1016/j.physe.2007.10.009

DO - 10.1016/j.physe.2007.10.009

M3 - Article

VL - 40

SP - 2468

EP - 2473

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

SN - 1386-9477

IS - 7

ER -