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Influence of triplet excitons on the lifetime of polymer-based organic light emitting diodes

Pekkola, Oili and Gassmann, Andrea and Etzold, Fabian and Laquai, Frédéric and von Seggern, Heinz (2014):
Influence of triplet excitons on the lifetime of polymer-based organic light emitting diodes.
In: physica status solidi (a), pp. n/a-n/a, ISSN 18626300,
[Online-Edition: http://dx.doi.org/10.1002/pssa.201330411],
[Article]

Abstract

n this work, the harmful effect of triplet excitons on the lifetime of poly(p-phenylene vinylene) (PPV)-based organic light emitting diodes is demonstrated. A model system has been designed in which the triplet population in a PPV derivative is increased by blending the polymer with the triplet sensitizer platinum (II) octaethylporphyrine ketone (PtOEPK). The increase in the triplet concentration of the polymer affects both the initial decay and the long-term evolution of luminance and leads to a drastic acceleration of device degradation, reflected in a dramatically shortened lifetime.

Item Type: Article
Erschienen: 2014
Creators: Pekkola, Oili and Gassmann, Andrea and Etzold, Fabian and Laquai, Frédéric and von Seggern, Heinz
Title: Influence of triplet excitons on the lifetime of polymer-based organic light emitting diodes
Language: English
Abstract:

n this work, the harmful effect of triplet excitons on the lifetime of poly(p-phenylene vinylene) (PPV)-based organic light emitting diodes is demonstrated. A model system has been designed in which the triplet population in a PPV derivative is increased by blending the polymer with the triplet sensitizer platinum (II) octaethylporphyrine ketone (PtOEPK). The increase in the triplet concentration of the polymer affects both the initial decay and the long-term evolution of luminance and leads to a drastic acceleration of device degradation, reflected in a dramatically shortened lifetime.

Journal or Publication Title: physica status solidi (a)
Uncontrolled Keywords: device lifetime; excitons; organic light-emitting diodes; polymers
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Electronic Materials
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
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 > D - Component properties > Subproject D4: Fatigue of organic electronic devices
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 14 Apr 2014 11:16
Official URL: http://dx.doi.org/10.1002/pssa.201330411
Additional Information:

SFB 595 D4

Identification Number: doi:10.1002/pssa.201330411
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