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Study of electrical fatigue by defect engineering in organic light-emitting diodes

Gassmann, Andrea and Yampolskii, Sergey V. and Klein, Andreas and Albe, Karsten and Vilbrandt, Nicole and Pekkola, Oili and Genenko, Yuri A. and Rehahn, Matthias and von Seggern, Heinz (2015):
Study of electrical fatigue by defect engineering in organic light-emitting diodes.
In: Materials Science and Engineering: B, pp. 26-51, 192, ISSN 09215107, [Online-Edition: http://dx.doi.org/10.1016/j.mseb.2014.10.014],
[Article]

Abstract

In this work the current knowledge on the electrical degradation of polymer-based light-emitting diodes is reviewed focusing especially on derivatives of poly(p-phenylene-vinylene) (PPV). The electrical degradation will be referred to as electrical fatigue and is understood as mechanisms, phenomena and material properties that change during continuous operation of the device at constant current. The focus of this review lies especially on the effect of chemical synthesis on the transport properties of the organic semiconductor and the device lifetimes. In addition, the prominent transparent conductive oxide indium tin oxide as well as In2O3 will be reviewed and how their properties can be altered by the processing conditions. The experiments are accompanied by theoretical modeling shining light on how the change of injection barriers, charge carrier mobility or trap density influence the current–voltage characteristics of the diodes and on how and which defects form in transparent conductive oxides used as anode.

Item Type: Article
Erschienen: 2015
Creators: Gassmann, Andrea and Yampolskii, Sergey V. and Klein, Andreas and Albe, Karsten and Vilbrandt, Nicole and Pekkola, Oili and Genenko, Yuri A. and Rehahn, Matthias and von Seggern, Heinz
Title: Study of electrical fatigue by defect engineering in organic light-emitting diodes
Language: English
Abstract:

In this work the current knowledge on the electrical degradation of polymer-based light-emitting diodes is reviewed focusing especially on derivatives of poly(p-phenylene-vinylene) (PPV). The electrical degradation will be referred to as electrical fatigue and is understood as mechanisms, phenomena and material properties that change during continuous operation of the device at constant current. The focus of this review lies especially on the effect of chemical synthesis on the transport properties of the organic semiconductor and the device lifetimes. In addition, the prominent transparent conductive oxide indium tin oxide as well as In2O3 will be reviewed and how their properties can be altered by the processing conditions. The experiments are accompanied by theoretical modeling shining light on how the change of injection barriers, charge carrier mobility or trap density influence the current–voltage characteristics of the diodes and on how and which defects form in transparent conductive oxides used as anode.

Journal or Publication Title: Materials Science and Engineering: B
Volume: 192
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Electronic Materials
11 Department of Materials and Earth Sciences > Material Science > Materials Modelling
11 Department of Materials and Earth Sciences > Material Science > Surface Science
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A5: Synthesis of semiconducting model polymers and their characterization before and after cyclic electrical fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > C - Modelling > Subproject C2: Atomistic computer simulations of defects and their mobility in metal oxides
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > C - Modelling > Subproject C5: Phenomenological modelling of injection, transport and recombination in organic semiconducting devices as well as in inorganic ferroelectric materials
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > D - Component properties > Subproject D3: Function and fatigue of oxide electrodes in organic light emitting diodes
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > D - Component properties > Subproject D4: Fatigue of organic electronic devices
11 Department of Materials and Earth Sciences > Material Science
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > C - Modelling
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > D - Component properties
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
11 Department of Materials and Earth Sciences
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 27 Nov 2014 09:21
Official URL: http://dx.doi.org/10.1016/j.mseb.2014.10.014
Additional Information:

SFB 595 Cooperation A5, C2, C5, D3, D4

Identification Number: doi:10.1016/j.mseb.2014.10.014
Funders: The financial support from the German Science Foundation (DFG) of the collaborative research center SFB 595 “Electrical fatigue in functional materials” for three funding periods (2003–2014) is gratefully acknowledged.
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