On the way towards NIR-OLEDs: Efficient exciton harvesting using triplet-singlet Förster-resonance energy transfer

Rongjuan Huang; Sebastian Schellhammer; Sebastian Reineke

doi:10.1117/12.3021877

19 June 2024 On the way towards NIR-OLEDs: Efficient exciton harvesting using triplet-singlet Förster-resonance energy transfer

Rongjuan Huang, Sebastian Schellhammer, Sebastian Reineke

Author Affiliations +

Proceedings Volume PC13013, Organic Electronics and Photonics: Fundamentals and Devices IV; PC130130K (2024) https://doi.org/10.1117/12.3021877
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Deep-red/near infrared (NIR) persistent emission from purely organic molecules possesses great potential for security protocols, imaging, and information exchange. Persistent electroluminescence, achieved by incorporating suitable materials in organic light-emitting diodes (OLEDs), is highly attractive as it allows to integrate the essential features into optoelectronic systems and applications. While first material systems using triplet-singlet Förster resonance energy transfer (TS-FRET) show promising characteristics, the concentrations of phosphorescent donor materials and fluorescent deep-red acceptor materials remain too low for OLED applications. In our contribution, we present a systematic photophysical analysis of several donor-acceptor combinations based on TS-FRET with the aim of increasing the donor concentration while keeping high photoluminescence quantum yields. Our results pave the way towards efficient deep-red/NIR down-conversion OLED pixels with persistent emission.

Conference Presentation

Citation Download Citation

Rongjuan Huang, Sebastian Schellhammer, and Sebastian Reineke "On the way towards NIR-OLEDs: Efficient exciton harvesting using triplet-singlet Förster-resonance energy transfer", Proc. SPIE PC13013, Organic Electronics and Photonics: Fundamentals and Devices IV, PC130130K (19 June 2024); https://doi.org/10.1117/12.3021877

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