Project description
Uncovering loss efficiency mechanisms of organic light-emitting diodes
Lanthanide-based organic light-emitting diodes (Ln-OLEDs) hold great potential for energy-efficient lighting and display technologies owing to their unique optical properties such as high photoluminescence and colour tunability and narrow linewidths. However, despite their high photoluminescence quantum yields, their practical efficiency is limited as the external quantum efficiency reaches only about 10 %. With the support of the Marie Skłodowska-Curie Actions programme, the EXD-LnOLED project will study exciton dynamics and energy transfer in operating Ln-OLEDs using advanced spectroscopic techniques such as ultrafast transient absorption and time-resolved electroluminescence. The proposed research should help uncover the mechanisms behind efficiency losses and improve charge balance to achieve state-of-the-art Ln-OLEDs with near 100 % exciton energy utilisation.
Objective
"This research project, ""EXD-LnOLED,"" aims to enhance the efficiency and functionality of lanthanide-based organic light-emitting diodes (Ln-OLEDs). OLEDs are efficient electroluminescent (EL) light sources for panel displays, light communication, and laser diode applications. To maximize efficiency, it is crucial to fully utilize excitons, which consist of 25% singlet and 75% triplet exciton states. Lanthanide complexes are ideal for OLEDs due to their unique optical properties, such as high photoluminescence quantum yield (PLQY), color tunability, and narrow linewidths. This triplet sensitization allows for potentially 100% utilization of exciton energy, leading to cost-effective EL devices. However, despite their high PLQY of around 80%, the external quantum efficiency (EQE) in operational OLEDs is limited to about 10%, restricting practical applications. The primary objective of this project is to develop in-situ/operando spectroscopic techniques to study exciton dynamics and energy transfer within operating Ln-OLEDs. By using advanced methods such as ultrafast transient absorption spectroscopy and time-resolved electroluminescence under in-situ/operando conditions, the research will uncover the mechanisms limiting current Ln-OLED efficiency. Additionally, the project will create innovative methods for detecting changes from electron injection, enhancing understanding of charge balance and dynamics in Ln-OLEDs. Ultimately, the project seeks to address efficiency challenges and achieve state-of-the-art Ln-OLEDs with the highest EQE. These insights will inform the design of high-efficiency devices, aiming for 100% exciton energy utilization, thus advancing energy-saving technologies and next-generation lighting solutions."
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences physical sciences condensed matter physics quasiparticles
- engineering and technology materials engineering colors
- natural sciences physical sciences optics laser physics
- natural sciences physical sciences optics spectroscopy
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
MAIN PROGRAMME
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Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2024-PF-01
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
CB2 1TN CAMBRIDGE
United Kingdom
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.