[OLED1-3] Mechanisms of Initial Luminance Loss in Fluorescent Organic Light-Emitting Diodes Unveiled by Time-Resolved Spectroscopies | Proceedings of the International Display Workshops Volume 27 (IDW '20)

Proceedings of the International Display Workshops Volume 27 (IDW '20)

Dec 9 - Dec 11, 2020Virtual Conference

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Proceedings of the International Display Workshops Volume 27 (IDW '20)

Dec 9 - Dec 11, 2020Virtual Conference

[OLED1-3]Mechanisms of Initial Luminance Loss in Fluorescent Organic Light-Emitting Diodes Unveiled by Time-Resolved Spectroscopies

*DUY Cong Le¹, Duong Dai Nguyen¹, Toshi-kazu Suzuki¹, Hideyuki Murata¹(1. Japan Advanced Institute of Science and Technology(Japan))

https://doi.org/10.36463/idw.2020.0367

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Keywords:

Triplet-triplet annihilation,Initial degradation,Quenching of singlet and triplet excitons

Time-resolved electroluminescence (EL) of Alq₃-based OLEDs revealed that delayed EL emission via triplet-triplet annihilation (TTA). We found that the initial luminescence loss of the OLED is caused by quenching of not only singlet but also triplet excitons. Triplet quenching by trapped positive charges decreases in singlet excitons created via TTA.

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