Optical properties of nanowires based on a blend of poly (9,9-dioctylfluorene) [PFO] and poly(9,9-dioctyl fluorene-alt-benzothiadiazole) [F8BT]

Abstract

Near-field and far-field optical microscopy are used to study the optical properties of nanowires based on a blend of 95% poly (9,9-dioctylfluorene) [PFO] doped with 5% poly (9,9-dioctylfluorene-alt-benzothiadiazole) [F8BT]. Single nanowires were imaged and optical investigations revealed that they act as nanoscale optical waveguides. Investigation using polarization-resolved far-field PL spectroscopy revealed emission from the nanowires was strongly anisotropic having preferred axial polarization. This suggests that a significant number of the polymer chains are oriented along the nanowire axis.

Metadata

Authors/Creators:

Khalil, G.E.
Adawi, A.M.
Lidzey, D.G. https://orcid.org/0000-0002-8558-1160

© 2019 Elsevier B.V. This is an author produced version of a paper subsequently published in Physica E: Low-dimensional Systems and Nanostructures. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/).

Keywords:

Polarization-resolved PL spectroscopy; Nanodevices; Organic semiconductors; Optical waveguide; Nanowire; Near and far-field PL spectroscopy

Dates: