The University of Southampton
University of Southampton Institutional Repository

Flexible organic light emitting diodes (OLEDs) based on a blue emitting polyfluorene

Flexible organic light emitting diodes (OLEDs) based on a blue emitting polyfluorene
Flexible organic light emitting diodes (OLEDs) based on a blue emitting polyfluorene

Flexible OLEDs were demonstrated using a highly efficient blue electroluminescent polyfluorene derivative. The flexible devices were fabricated on indium tin oxide (ITO) coated polyethylene terephthalate (PET) substrates with a sheet resistance of 35 Ω per sq. The emitting layer was poly[9,9-di-(2′-ethylhexyl)fluorenyl-2,7-diyl] (PF). A significant improvement of the luminance and device efficiency was achieved by confining the exciton formation zone within PF by two wide band-gap materials, namely PVK as a hole transport layer (HTL) and an inorganic oxide layer (IOL) as an electron transport and hole blocking layer. In order to achieve full-color LEDs based on a common host material, we probed the use of suitable dye emitters dispersed in PF at appropriate concentrations. The selection of the emitters is based on their capability to be effective energy transfer acceptors from the blue emitting PF. In particular, energy transfer was demonstrated from blue to green for PF-doped with the green dye emitter 1-[4-(dimethylamino)phenyl]-6- phenylhexa-1,3,5,-triene (DMA-DPH), and from blue to red for PF-doped with the red dye emitter (4-dimethylamino-4′-nitrostilbene) (DANS). This demonstration paves the way for developing highly efficient blue, green and red flexible OLEDs based on a common blue emitting PF host.

1862-6351
3658-3662
Vasilopoulou, M.
aad1381e-d091-4090-8c7c-b74bed22393d
Palilis, L. C.
b09e9554-54da-4be5-aa08-bda894e2b86f
Botsialas, A.
b23cb54a-8266-4389-b188-f96c206cd6d2
Georgiadou, D. G.
84977176-3678-4fb3-a3dd-2044a49c853b
Bayiati, P.
85e340c3-af21-4f7e-a0bc-121a35fed136
Vourdas, N.
10d8cfb5-6665-4a65-8b36-d9df0929a425
Petrou, P. S.
3d15fa2f-64e6-4d1d-a569-170855c9c957
Pistolis, G.
2a710db0-c97d-44bb-8ffc-896a7cd2a087
Stathopoulos, N. A.
83a4653f-c4c8-464a-8ed1-a93c52cf3833
Argitis, P.
ab9c4ea6-3dd2-4e34-935d-81bfb360f358
Vasilopoulou, M.
aad1381e-d091-4090-8c7c-b74bed22393d
Palilis, L. C.
b09e9554-54da-4be5-aa08-bda894e2b86f
Botsialas, A.
b23cb54a-8266-4389-b188-f96c206cd6d2
Georgiadou, D. G.
84977176-3678-4fb3-a3dd-2044a49c853b
Bayiati, P.
85e340c3-af21-4f7e-a0bc-121a35fed136
Vourdas, N.
10d8cfb5-6665-4a65-8b36-d9df0929a425
Petrou, P. S.
3d15fa2f-64e6-4d1d-a569-170855c9c957
Pistolis, G.
2a710db0-c97d-44bb-8ffc-896a7cd2a087
Stathopoulos, N. A.
83a4653f-c4c8-464a-8ed1-a93c52cf3833
Argitis, P.
ab9c4ea6-3dd2-4e34-935d-81bfb360f358

Vasilopoulou, M., Palilis, L. C., Botsialas, A., Georgiadou, D. G., Bayiati, P., Vourdas, N., Petrou, P. S., Pistolis, G., Stathopoulos, N. A. and Argitis, P. (2008) Flexible organic light emitting diodes (OLEDs) based on a blue emitting polyfluorene. Physica Status Solidi (C) Current Topics in Solid State Physics, 5 (12), 3658-3662. (doi:10.1002/pssc.200780214).

Record type: Article

Abstract

Flexible OLEDs were demonstrated using a highly efficient blue electroluminescent polyfluorene derivative. The flexible devices were fabricated on indium tin oxide (ITO) coated polyethylene terephthalate (PET) substrates with a sheet resistance of 35 Ω per sq. The emitting layer was poly[9,9-di-(2′-ethylhexyl)fluorenyl-2,7-diyl] (PF). A significant improvement of the luminance and device efficiency was achieved by confining the exciton formation zone within PF by two wide band-gap materials, namely PVK as a hole transport layer (HTL) and an inorganic oxide layer (IOL) as an electron transport and hole blocking layer. In order to achieve full-color LEDs based on a common host material, we probed the use of suitable dye emitters dispersed in PF at appropriate concentrations. The selection of the emitters is based on their capability to be effective energy transfer acceptors from the blue emitting PF. In particular, energy transfer was demonstrated from blue to green for PF-doped with the green dye emitter 1-[4-(dimethylamino)phenyl]-6- phenylhexa-1,3,5,-triene (DMA-DPH), and from blue to red for PF-doped with the red dye emitter (4-dimethylamino-4′-nitrostilbene) (DANS). This demonstration paves the way for developing highly efficient blue, green and red flexible OLEDs based on a common blue emitting PF host.

Full text not available from this repository.

More information

e-pub ahead of print date: 29 October 2008
Published date: 15 December 2008
Venue - Dates: 3rd International Conference on Micro-Nanoelectronics, Nanotechnology and MEMs, Greece, 2007-11-18 - 2007-11-21

Identifiers

Local EPrints ID: 440502
URI: http://eprints.soton.ac.uk/id/eprint/440502
ISSN: 1862-6351
PURE UUID: 0329d82d-48e8-44e1-a40b-69fe4a2005da
ORCID for D. 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: M. Vasilopoulou
Author: L. C. Palilis
Author: A. Botsialas
Author: P. Bayiati
Author: N. Vourdas
Author: P. S. Petrou
Author: G. Pistolis
Author: N. A. Stathopoulos
Author: P. 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.

×