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Solution processed multi-color organic light emitting diodes for application in telecommunications

Solution processed multi-color organic light emitting diodes for application in telecommunications
Solution processed multi-color organic light emitting diodes for application in telecommunications

In this work we present an all solution processing scheme for the fabrication of the three primary colors, (R-G-B), emitting organic light-emitting diodes (OLEDs) via efficient color tuning of a blue organic semiconducting (OSC) thin film, in particular the poly[9,9-di-(2′-ethylhexyl)fluorenyl-2,7-diyl] (PF), in which different color fluorescent emitters are dispersed to define the final emitting color and thus to simplify the different color device fabrication. The transmission speed of the fabricated OLEDs was also examined for possible application in interactive telecommunications. To increase the response speed of the different color devices we altered both the device geometry and the electron injection efficiency. To this end we increased the emissive layer thickness and decreased the device emissive area and we also performed engineering of the cathode interfaces through the incorporation of solution processed porphyrin interlayers in order to lower the electron injection barrier height. The final devices exhibited improved operational characteristics and, consequently, modulation speeds.

Blue-green-red, Fluorescent emitters, OLEDs, Polyfluorene, Porphyrin, Telecommunications
0167-9317
21-28
Vasilopoulou, M.
aad1381e-d091-4090-8c7c-b74bed22393d
Georgiadou, D. G.
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Soultati, A.
75205fde-50fc-473e-ad72-ab0b3c6b2cb9
Douvas, A. M.
2e088659-e1b3-4723-aff9-4dfe385579b5
Papadimitropoulos, G.
b4f1ecba-cc8a-4882-99a5-a29354a9bca7
Davazoglou, D.
a946cf5d-287a-4734-ba55-b180ab4525ed
Pistolis, G.
2a710db0-c97d-44bb-8ffc-896a7cd2a087
Stathopoulos, N. A.
83a4653f-c4c8-464a-8ed1-a93c52cf3833
Kamalakis, T.
62137d43-f51d-40c9-a00d-7f1522e5cabe
Alexandropoulos, D.
5d40cac5-30a4-4577-a2df-f26a8e5390fb
Vainos, N.
7119b61d-73cc-4842-9c1a-b87672d09333
Politi, C. T.
ded2ed0e-4019-49cc-ad3a-e73954e16574
Palilis, L. C.
b09e9554-54da-4be5-aa08-bda894e2b86f
Couris, S.
7f33fee7-390a-4c2d-87d8-fa771b213447
Coutsolelos, A. G.
ee1dc69e-5f00-4f79-9eb5-e5dd741fc99f
Argitis, P.
ab9c4ea6-3dd2-4e34-935d-81bfb360f358
Vasilopoulou, M.
aad1381e-d091-4090-8c7c-b74bed22393d
Georgiadou, D. G.
84977176-3678-4fb3-a3dd-2044a49c853b
Soultati, A.
75205fde-50fc-473e-ad72-ab0b3c6b2cb9
Douvas, A. M.
2e088659-e1b3-4723-aff9-4dfe385579b5
Papadimitropoulos, G.
b4f1ecba-cc8a-4882-99a5-a29354a9bca7
Davazoglou, D.
a946cf5d-287a-4734-ba55-b180ab4525ed
Pistolis, G.
2a710db0-c97d-44bb-8ffc-896a7cd2a087
Stathopoulos, N. A.
83a4653f-c4c8-464a-8ed1-a93c52cf3833
Kamalakis, T.
62137d43-f51d-40c9-a00d-7f1522e5cabe
Alexandropoulos, D.
5d40cac5-30a4-4577-a2df-f26a8e5390fb
Vainos, N.
7119b61d-73cc-4842-9c1a-b87672d09333
Politi, C. T.
ded2ed0e-4019-49cc-ad3a-e73954e16574
Palilis, L. C.
b09e9554-54da-4be5-aa08-bda894e2b86f
Couris, S.
7f33fee7-390a-4c2d-87d8-fa771b213447
Coutsolelos, A. G.
ee1dc69e-5f00-4f79-9eb5-e5dd741fc99f
Argitis, P.
ab9c4ea6-3dd2-4e34-935d-81bfb360f358

Vasilopoulou, M., Georgiadou, D. G., Soultati, A., Douvas, A. M., Papadimitropoulos, G., Davazoglou, D., Pistolis, G., Stathopoulos, N. A., Kamalakis, T., Alexandropoulos, D., Vainos, N., Politi, C. T., Palilis, L. C., Couris, S., Coutsolelos, A. G. and Argitis, P. (2015) Solution processed multi-color organic light emitting diodes for application in telecommunications. Microelectronic Engineering, 145, 21-28. (doi:10.1016/j.mee.2015.02.005).

Record type: Article

Abstract

In this work we present an all solution processing scheme for the fabrication of the three primary colors, (R-G-B), emitting organic light-emitting diodes (OLEDs) via efficient color tuning of a blue organic semiconducting (OSC) thin film, in particular the poly[9,9-di-(2′-ethylhexyl)fluorenyl-2,7-diyl] (PF), in which different color fluorescent emitters are dispersed to define the final emitting color and thus to simplify the different color device fabrication. The transmission speed of the fabricated OLEDs was also examined for possible application in interactive telecommunications. To increase the response speed of the different color devices we altered both the device geometry and the electron injection efficiency. To this end we increased the emissive layer thickness and decreased the device emissive area and we also performed engineering of the cathode interfaces through the incorporation of solution processed porphyrin interlayers in order to lower the electron injection barrier height. The final devices exhibited improved operational characteristics and, consequently, modulation speeds.

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More information

Accepted/In Press date: 3 February 2015
e-pub ahead of print date: 21 February 2015
Published date: 1 September 2015
Keywords: Blue-green-red, Fluorescent emitters, OLEDs, Polyfluorene, Porphyrin, Telecommunications

Identifiers

Local EPrints ID: 440524
URI: http://eprints.soton.ac.uk/id/eprint/440524
ISSN: 0167-9317
PURE UUID: 8113daa0-71b6-41b7-a498-0988e37b6e99
ORCID for D. G. Georgiadou: ORCID iD orcid.org/0000-0002-2620-3346

Catalogue record

Date deposited: 06 May 2020 16:31
Last modified: 07 Oct 2020 02:27

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Contributors

Author: M. Vasilopoulou
Author: A. Soultati
Author: A. M. Douvas
Author: G. Papadimitropoulos
Author: D. Davazoglou
Author: G. Pistolis
Author: N. A. Stathopoulos
Author: T. Kamalakis
Author: D. Alexandropoulos
Author: N. Vainos
Author: C. T. Politi
Author: L. C. Palilis
Author: S. Couris
Author: A. G. Coutsolelos
Author: P. Argitis

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