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Review on Photo- and Electrical Ageing Mechanisms for Neutral Excitons and Ions in Organic Light-emitting Diodes

Abstract

In spite of the immense market they created, organic light-emitting diodes (OLEDs) are still facing the problem of insufficient operational lifetime, especially for the blue-emission phosphorescent or thermally activated delayed fluorescent OLEDs which exhibite the extreme efficiency limit. Interpreting their photo-electrical ageing mechanisms will give unambiguous advices on device lifetime elongation methodologies. Therefore, the mechanistic study of in-device degrading processes and predicting the diode stability not only push the technological advance but provide also interesting topics for academic exploration. Vast progresses have been made in recent years on the fundamental aspects of operational stability from physical and physical chemistry insight, of which the results as well as the theoretical and experimental approaches they used will be introduced in this review. Prospects of the further enhancement on OLED stability will also be discussed.

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Publication details

The article was received on 30 Sep 2019, accepted on 22 Nov 2019 and first published on 26 Nov 2019


Article type: Review Article
DOI: 10.1039/C9TC05373E
J. Mater. Chem. C, 2019, Accepted Manuscript

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    Review on Photo- and Electrical Ageing Mechanisms for Neutral Excitons and Ions in Organic Light-emitting Diodes

    C. Zhao and L. Duan, J. Mater. Chem. C, 2019, Accepted Manuscript , DOI: 10.1039/C9TC05373E

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