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

Project description

Inventing new near-infrared OLED displays

Organic light-emitting diode (OLED) displays are popular for their high picture quality, and future screens could use near-infrared pixels to add imaging and security functions. However, creating them requires persistent room-temperature phosphorescence (p-RTP) that emits in the correct wavelength. To solve this, the EU funded PNIRED project will make efficient near-infrared p-RTP emissive materials for new near-infrared OLEDs. Researchers will use spectroscopy to investigate the photophysical properties of organic materials and correlate them with the molecular microenvironment. They will then use established OLED fabrication routines to develop near-infrared down conversion OLED pixels with persistent emission.


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.


Net EU contribution
€ 173 847,36
01069 Dresden

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Sachsen Dresden Dresden, Kreisfreie Stadt
Activity type
Higher or Secondary Education Establishments
Total cost
No data

Partners (1)