Reduced transition metal oxides as electron injection layers in hybrid-PLEDs
Reduced transition metal oxides as electron injection layers in hybrid-PLEDs
Here we report on the improved performance of hybrid polymer light emitting diodes (HyPLEDs) upon inserting an ultra thin layer of partially reduced tungsten oxide (WO2.5) or molybdenum oxide (MoO2.7), deposited (by heating a W or Mo filament while hydrogen was flowing through the chamber) at the polymer/Al cathode interface. Improved current densities, luminances and efficiencies were achieved as a result of improved electron injection and transport at its interface with Al. The observed electron injection improvement is attributed to the lowering of the effective cathode interfacial barrier due to the occupation of gap states with electrons after partial reduction.
Hybrid polymer light emitting diodes, OLEDs, Reduced transition metal oxides, Reduction
59-61
Vasilopoulou, M.
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Georgiadou, D. G.
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Palilis, L. C.
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Argitis, P.
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Kennou, S.
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Sygellou, L.
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Konofaos, N.
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Iliadis, A.
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Kostis, I.
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Papadimitropoulos, G.
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Davazoglou, D.
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Vasilopoulou, M.
aad1381e-d091-4090-8c7c-b74bed22393d
Georgiadou, D. G.
84977176-3678-4fb3-a3dd-2044a49c853b
Palilis, L. C.
b09e9554-54da-4be5-aa08-bda894e2b86f
Argitis, P.
ab9c4ea6-3dd2-4e34-935d-81bfb360f358
Kennou, S.
7ca6a6bd-6a05-4110-b3da-c8807f798370
Sygellou, L.
87e6de58-e0d8-46b1-aaa9-0d2150379562
Konofaos, N.
18d67477-5af4-4d52-aa0c-3b933e96fc50
Iliadis, A.
4009bfb1-8f1d-483a-aa6b-ed81ed539b8c
Kostis, I.
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Papadimitropoulos, G.
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Davazoglou, D.
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Vasilopoulou, M., Georgiadou, D. G., Palilis, L. C., Argitis, P., Kennou, S., Sygellou, L., Konofaos, N., Iliadis, A., Kostis, I., Papadimitropoulos, G. and Davazoglou, D.
(2012)
Reduced transition metal oxides as electron injection layers in hybrid-PLEDs.
Microelectronic Engineering, 90, .
(doi:10.1016/j.mee.2011.05.017).
Abstract
Here we report on the improved performance of hybrid polymer light emitting diodes (HyPLEDs) upon inserting an ultra thin layer of partially reduced tungsten oxide (WO2.5) or molybdenum oxide (MoO2.7), deposited (by heating a W or Mo filament while hydrogen was flowing through the chamber) at the polymer/Al cathode interface. Improved current densities, luminances and efficiencies were achieved as a result of improved electron injection and transport at its interface with Al. The observed electron injection improvement is attributed to the lowering of the effective cathode interfacial barrier due to the occupation of gap states with electrons after partial reduction.
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Accepted/In Press date: 12 May 2011
e-pub ahead of print date: 19 May 2012
Keywords:
Hybrid polymer light emitting diodes, OLEDs, Reduced transition metal oxides, Reduction
Identifiers
Local EPrints ID: 440514
URI: http://eprints.soton.ac.uk/id/eprint/440514
ISSN: 0167-9317
PURE UUID: e07bb6e2-557d-4d9d-bede-9e4f93760997
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Date deposited: 06 May 2020 16:30
Last modified: 17 Mar 2024 04:00
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Contributors
Author:
M. Vasilopoulou
Author:
L. C. Palilis
Author:
P. Argitis
Author:
S. Kennou
Author:
L. Sygellou
Author:
N. Konofaos
Author:
A. Iliadis
Author:
I. Kostis
Author:
G. Papadimitropoulos
Author:
D. Davazoglou
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