Project description
White light emission mechanisms in quasi-two-dimensional halide perovskites
Broad white light emission – covering the entire visible spectrum – enables replication of natural lighting conditions and high-fidelity colour rendering by LEDs, ensuring objects are displayed true to reality. Quasi-two-dimensional halide perovskites (Q2D HPs) are extremely promising broadband white light emitters. Their alternating inorganic and organic stacked layers facilitate complex behaviour of self-trapped excitons (STEs). STEs are localised excited electron-hole pairs responsible for broadband white light emission due to STE interaction with phonon lattice vibrations. With the support of the Marie Skłodowska-Curie Actions programme, the IS-WISER project aims to develop a computational framework to accurately model Q2D HP phenomena. Understanding white light emission mechanisms in Q2D HPs could support rational design of next-generation LEDs.
Objective
Organic-inorganic halide perovskites have emerged as promising materials for light-emitting devices (LEDs) due to their broad white-light emission, primarily attributed to self-trapped excitons (STEs). In such perovskites, the inorganic and organic layers are stacked alternatively, leading to a quasi-two-dimensional structure. The unique structural configuration in quasi-two-dimensional halide perovskite(Q2D HP) leads to complex excitonic behaviour. The soft lattice of Q2D HP facilitates the formation of STE in which the exciton interacts with lattice vibrations to lower the energy and get trapped. Given the structural complexity, theoretical studies on STEs in Q2D HP have been sparse, hindering the optimization of those for practical applications. This proposal seeks to address this gap by conducting an in-depth theoretical investigation into the formation, tunability, and relaxation mechanisms of STEs in Q2D HPs, using advanced first-principles methods. The research will explore the interactions between excitons and lattice vibrations (phonons) and develop a computational framework capable of accurately modelling STEs in these complex systems. I will consider different types of Q2D HPs to understand the correlations between the crystal orientation and the emission spectra. Additionally, the impact of organic cation size and shape on emission spectra will be explored to understand chemical tunability and the role of defects, such as halide vacancies, in influencing STE behaviour. Finally, the study will examine non-radiative decay channels of STEs, such as vibrational loss and Auger recombination, aiming to correlate these with structural properties to propose material compositions that enhance device efficiency while maintaining white-light emission. The outcomes of this research will provide critical insights into the mechanisms of white light emission in Q2D HPs and the development of next-generation LEDs.
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.
This project's classification has been human-validated.
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.
This project's classification has been human-validated.
- engineering and technology materials engineering crystals
- natural sciences physical sciences condensed matter physics quasiparticles
- natural sciences chemical sciences inorganic chemistry organometallic chemistry
- engineering and technology nanotechnology nano-materials two-dimensional nanostructures
- natural sciences physical sciences condensed matter physics solid-state physics
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)
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.
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-2025-PF
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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.
OX1 2JD Oxford
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.