The University of Southampton
University of Southampton Institutional Repository

A water soluble inorganic molecular oxide as a novel efficient electron injection layer for hybrid light-emitting diodes (HyLEDs)

A water soluble inorganic molecular oxide as a novel efficient electron injection layer for hybrid light-emitting diodes (HyLEDs)
A water soluble inorganic molecular oxide as a novel efficient electron injection layer for hybrid light-emitting diodes (HyLEDs)

We demonstrate that electron injection in single-layer polyfluorene based polymer light-emitting diodes (PLEDs) can be significantly enhanced by inserting a thin (<10 nm) inorganic polyoxometalate (POM) molecular oxide layer between the polymer layer and an aluminum cathode. Hydrophilic POM was spin-cast from methanol, an orthogonal solvent with regard to the hydrophobic polymer layer underneath, to form the thin cathode interfacial/electron injection layer. A lower turn-on and operating voltage and a higher luminance and current density was obtained in the POM-modified hybrid LEDs (HyLEDs) which are associated with the electron injection barrier reduction in the modified polymer/Al interface, evidenced by the increased open circuit voltage from photovoltaic measurements. These results demonstrate the potential of polyoxometalates as novel, stable cathode interfacial layers for efficient electron injection/transport in high performance HyLEDs.

Built-in potential, Electron injection layer, Hybrid light-emitting diodes (HyLEDs), Polyoxometalate (POM)
1566-1199
887-894
Palilis, Leonidas C.
b09e9554-54da-4be5-aa08-bda894e2b86f
Vasilopoulou, Maria
aad1381e-d091-4090-8c7c-b74bed22393d
Georgiadou, Dimitra G.
84977176-3678-4fb3-a3dd-2044a49c853b
Argitis, Panagiotis
ab9c4ea6-3dd2-4e34-935d-81bfb360f358
Palilis, Leonidas C.
b09e9554-54da-4be5-aa08-bda894e2b86f
Vasilopoulou, Maria
aad1381e-d091-4090-8c7c-b74bed22393d
Georgiadou, Dimitra G.
84977176-3678-4fb3-a3dd-2044a49c853b
Argitis, Panagiotis
ab9c4ea6-3dd2-4e34-935d-81bfb360f358

Palilis, Leonidas C., Vasilopoulou, Maria, Georgiadou, Dimitra G. and Argitis, Panagiotis (2010) A water soluble inorganic molecular oxide as a novel efficient electron injection layer for hybrid light-emitting diodes (HyLEDs). Organic Electronics, 11 (5), 887-894. (doi:10.1016/j.orgel.2010.02.004).

Record type: Article

Abstract

We demonstrate that electron injection in single-layer polyfluorene based polymer light-emitting diodes (PLEDs) can be significantly enhanced by inserting a thin (<10 nm) inorganic polyoxometalate (POM) molecular oxide layer between the polymer layer and an aluminum cathode. Hydrophilic POM was spin-cast from methanol, an orthogonal solvent with regard to the hydrophobic polymer layer underneath, to form the thin cathode interfacial/electron injection layer. A lower turn-on and operating voltage and a higher luminance and current density was obtained in the POM-modified hybrid LEDs (HyLEDs) which are associated with the electron injection barrier reduction in the modified polymer/Al interface, evidenced by the increased open circuit voltage from photovoltaic measurements. These results demonstrate the potential of polyoxometalates as novel, stable cathode interfacial layers for efficient electron injection/transport in high performance HyLEDs.

Full text not available from this repository.

More information

Accepted/In Press date: 2 February 2010
e-pub ahead of print date: 10 February 2010
Keywords: Built-in potential, Electron injection layer, Hybrid light-emitting diodes (HyLEDs), Polyoxometalate (POM)

Identifiers

Local EPrints ID: 440507
URI: http://eprints.soton.ac.uk/id/eprint/440507
ISSN: 1566-1199
PURE UUID: 52f03574-ec3f-4128-8474-9a37b01a473b
ORCID for Dimitra G. Georgiadou: ORCID iD orcid.org/0000-0002-2620-3346

Catalogue record

Date deposited: 06 May 2020 16:30
Last modified: 07 Oct 2020 02:27

Export record

Altmetrics

Contributors

Author: Leonidas C. Palilis
Author: Maria Vasilopoulou
Author: Panagiotis Argitis

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×