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Developing near-infrared persistent room-temperature phosphorescence for down-conversion OLEDs

Projektbeschreibung

Neue OLED-Displays im Nahinfrarotbereich

Displays mit organischen lichtemittierenden Dioden (OLEDs) sind aufgrund ihrer hohen Bildqualität sehr beliebt. Künftig könnte es auch Bildschirme geben, die Pixel im Nahinfrarotbereich nutzen, um zusätzliche Bild- und Sicherheitsfunktionen zu bieten. Ihre Herstellung setzt jedoch eine persistente Raumtemperatur-Phosphoreszenz (p-RTP) voraus, die Licht in der richtigen Wellenlänge emittiert. Das EU-finanzierte Projekt PNIRED wird effiziente p-RTP-Emittermaterialien im Nahinfrarotbereich für neue Nahinfrarot-OLEDs herstellen. Mittels Spektroskopie werden die Forschenden die photophysikalischen Eigenschaften von organischen Materialien untersuchen und sie mit der molekularen Mikroumgebung korrelieren. Ferner werden sie auf der Grundlage etablierter OLED-Herstellungsabläufe abwärtskonvertierende OLED-Pixel mit persistenter Emission entwickeln.

Ziel

The continuous progress of persistent room-temperature phosphorescence (p-RTP) emitting in near infrared (NIR) with high potential for long-lifetime and flexible optoelectronic applications is spearheaded by the development of novel materials. Much of this interest is also due to the concomitant advantages of the organic light-emitting diode (OLED) technology. Future OLED displays are envisioned to comprise an additional NIR pixel for imaging and security protocols. Equally such NIR OLEDs can be used as a monolithically manufactured light sources in bioimaging applications. However, limited by the energy gap law, the majority of p-RTP materials emit in the visible region, NIR phosphors are rarely reported. To solve this challenge, this project aims to progress along two clear research directions: i) engineering efficient NIR p-RTP emissive material systems and ii) developing well-performing (persistent) NIR OLEDs.
To construct NIR p-RTP material systems, we will put in action work packages (WPs) 1-2 by employing available organic materials to engineer host/guest emissive systems with high efficiency and stability. The correlation of their photophysical properties to the molecular microenvironment will also be investigated using the state-of-the-art spectroscopy methodologies to elucidate the mechanisms. WPs 3-4 will use established OLED fabrication routines to develop efficient NIR down-conversion OLED pixels with persistent emission and transfer the knowledge to an industrial R&D environment. The multi-disciplinary project will bridge the gap between the fundamental material research of NIR p-RTP emission and the monolithic integration of these systems in actual OLEDs as down-conversion layers for advanced sensing applications through joint research in physics, engineering and material science. I can perfectly bring in my existing skills, further broaden my expertise substantially and foster academic and industrial connections to build my future career network.

Koordinator

TECHNISCHE UNIVERSITAET DRESDEN
Netto-EU-Beitrag
€ 173 847,36
Adresse
Helmholtzstrasse 10
01069 Dresden
Deutschland

Auf der Karte ansehen

Region
Sachsen Dresden Dresden, Kreisfreie Stadt
Aktivitätstyp
Higher or Secondary Education Establishments
Links
EU-Beitrag
Keine Daten

Partner (1)