Project description
The monolithic path to full-spectrum LEDs
While blue indium gallium nitride (InGaN) LEDs are efficient, red versions suffer from high indium content, causing lattice strain and defects that limit performance. Supported by the Marie Skłodowska-Curie Actions programme, the UNIRED project aims to overcome these obstacles by investigating defect-related limitations in InGaN nanowires. Through selective area molecular beam epitaxial growth, the project will control indium incorporation to achieve tunable red-green-blue emission. Innovative strategies, such as GaN shell encapsulation and low-indium buffer layers, will be used to suppress defects and enhance red emission efficiency. UNIRED will also benchmark its performance against industrial standards. This research is expected to enable true monolithic integration, paving the way for compact, energy-efficient, and high-resolution next-generation micro-LED displays.
Objective
Indium gallium nitride (InGaN) semiconductors have emerged as a highly promising material platform for the realization of high-performance red–green–blue (RGB) micro-light-emitting diode (μLED) displays within a single material family. However, there remains a disparity in performance, with blue InGaN LEDs demonstrating higher efficiency than their red counterparts. The problem arises from the high indium (In) content, which leads to lattice strain, defect generation, and quantum-confined Stark effect hindering the development of high-efficiency red InGaN μLEDs. UNIRED aims to investigate defect-related limitations and their suppression strategies in InGaN nanowires (NWs). Overcoming these challenges is critical to unlock full-spectrum RGB emission from a monolithic system. UNIRED addresses this bottleneck by systematically undertaking an in-depth analysis of the types and origins of defects in high-In InGaN nanostructures, their influence on optoelectronic properties, and mitigation routes to minimize non-radiative recombination losses. This comprehensive approach is designed to establish clear structure–property correlations and provide pathways to enhance red emission. The methodology combines diameter-dependent selective area molecular beam epitaxial growth with controlled In incorporation for tunable RGB emission. Axial GaN barriers, lateral GaN shell encapsulation, and a low-In buffer layer collectively suppress defects, relieve strain, and enhance the efficiency of red-emitting NW-based μLEDs. UNIRED further benchmarks the performance of its monolithic NW-based μLEDs against industrial-standard nanophosphor-based red μLEDs to provide a clear comparative framework. By pioneering this integrated strategy, UNIRED aims to overcome the efficiency limitations of red InGaN emitters, enabling true monolithic RGB integration. The outcomes will pave the way for compact, energy-efficient, and high-resolution next-generation μLED display technologies.
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 chemical sciences inorganic chemistry post-transition metals
- natural sciences physical sciences electromagnetism and electronics semiconductivity
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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.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-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.
75794 Paris
France
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.