Project description
Mixed halide quasi-2D perovskite pure blue emitters
Progress in achieving high-performance perovskite pure blue LEDs lags that of green and red ones, limiting the integration of perovskites into next-generation solid-state lighting and display technologies. With the support of the Marie Skłodowska-Curie Actions programme, the Blue-PeroLED project aims to develop metal halide perovskites-based, spectrally stable, high-performance pure blue LEDs. Using innovative methods, the team will produce quasi-2D perovskite (Q2DPe) with a chlorine-rich surface exhibiting homogeneous halide distribution and localised lattice distortions within the unit cell. This is expected to enable high ion migration activation energies that suppress ion migration and phase segregation, enhancing spectral stability. The Q2DPe will be used to fabricate spectrally stable high-performance pure blue LEDs.
Objective
"
In this project, we aim to develop metal halide perovskites-based spectrally stable, high-performance pure blue light-emitting diodes (LEDs). This research objective is crucial for the development of perovskite-based solution-processed, cost-effective next-generation solid-state lighting and display technologies. Despite achieving perovskite green and red LEDs with EQEs > 25% and luminance (L) >100000 cd/m2, the sought-after perovskite pure blue LEDs (455 nm < peak emission < 470 nm) have been lagging far behind in their performance with max. EQEs < 8% and L < 1000 cd/m2, and typically suffer from severe spectral instability due to ion migration and phase segregation. These inefficient perovskite pure blue LEDs hold back the perovskites' integration into next-generation solid-state lighting/display technologies. Here, I will design spectrally stable and efficient mixed ‘Cl/Br’ halide quasi-2D perovskite (Q2DPe) pure blue emitters through “compositional engineering”, in particular by using chlorinated bulky organic cations (BOCs) and introducing a small fraction of large size A-site cations. The resultant Q2DPe will comprise of “Cl-rich surface with homogeneous halide distribution and localized lattice distortions within the unit cell"", and are speculated to possess elevated ion migration activation energies, which will suppress ion migration and phase segregation, thereby ensuring spectral stability. Further, I will design and fabricate LEDs with interface engineering, and study LED test device structures (HTL-only and ETL-only devices) to find out suitable pairs of HTL-ETLs to achieve efficient and balanced charge carrier injection, eventually resulting in spectrally stable high-performance pure blue LEDs. The project outcomes will be spectrally stable, efficient Q2DPe pure blue emitters and high-performance pure blue LEDs with EQE > 15%, luminance > 50000 cd/m2, and lifetime > 500 h at 500 cd/m2, which largely exceeds the current state-of-the-art."
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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-2023-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.
3000 Leuven
Belgium
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.