Project description
Multiple-resonance thermally activated delayed fluorescence emitters for pure red/near-IR light
Organic light-emitting diodes (OLEDs) are typically thin-film, carbon-based semiconductors that emit light when electricity is applied. They are used in all kinds of displays as well as lighting. Multiple-resonance thermally activated delayed fluorescence (MR-TADF) materials are in great demand for use in OLEDs due to their very high efficiency and narrow band emission. However, the majority fall in the blue-green region. Furthermore, the efficiency of most decreases at high brightness levels (efficiency roll-off) and they tend to be unstable during operation. The EU-funded DRNIRMRDF aims to make two new MR-TADF emitter designs for long-wavelength emitters (pure-red/near-infrared region) without affecting the emission colour purity and efficiency roll-off of OLEDs.
Objective
Multiple-resonance (MR) thermally activated delayed fluorescence (TADF) materials are the current research hotspot in organic light-emitting diodes (OLEDs) due to their ability to deliver remarkable color purity with full-width-at-half maximum (FWHM < 30 nm) and high efficiency. However, emission of the majority of reported MR-TADF emitters fell in the blue/green region because of their intrinsic triangulene geometry and limited scope for structural diversity, while examples of emitters addressing the other primary colors required for displays are either rarely (red) or not (Near-Infra Red (NIR)) reported. In addition, most MR-TADF OLEDs show severe efficiency roll-off and poor operational stability. Therefore, it is urgent need to make the new molecular designs for producing long-wavelength (> 600 nm) MR-TADF emitters i.e. pure-red/NIR MR-TADF emitters without compromising the emission color purity (FWHM < 25 nm) and efficiency roll-off of OLEDs. These materials are not only applicable in OLEDs, but also useful in night vision displays, sensors and information-secured displays. To this end, here we proposed two new MR-TADF emitter designs to circumvent the aforementioned drawbacks. In the first approach, we have designed linearly π-extended boron (B)/Nitrogen (N)-based polyaromatic hydrocarbon (PAHs) for shifting the emission into deep-red region. In the second approach, we have proposed a simple, yet versatile design for constructing narrowband NIR emitters. The rationality of the proposed designs were validated by the preliminary computational studies. This is a highly interdisciplinary project that covers the fields of organic synthesis, computational modelling, physical and optoelectronic characterization, OLED fabrication and testing. This proposal exploits the two-way transfer of knowledge between the host and the applicant, and the state-of-the-art facilities of the host organization.
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.
- engineering and technology materials engineering colors
- natural sciences chemical sciences organic chemistry hydrocarbons
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering sensors
- natural sciences mathematics pure mathematics geometry
- natural sciences chemical sciences inorganic chemistry metalloids
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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.4.1 - Widening participation and spreading excellence
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
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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-WIDERA-2023-TALENTS-02
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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.
LT-44029 Kaunas
Lithuania
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