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Affordable TAndem Cell Architecture by Multi-thin-epitaxy Approach

Objective

Climate change is one of the greatest challenges of our time. It is essential to drastically reduce greenhouse gas emissions. We need more and better photovoltacis (PV) to drastically reduce the CO2 emissions. PV will need to be widely distributed to be able to replace the enormous (and growing) amounts of conventional electrical energy. Availability of surface areas allocated to PV, preferably close to the end use of the electricity, will become an issue. Reliability and a high energy yield per area will become important for the success of PV products. Europe presents higher complexity than other regions, because of its limited space and high-density population.
Current Silicon technology is basically limited by its single junction (one semiconductor bandgap) to efficiencies below 30%. Multi-junctions/Tandems using more than one semiconductor diode (aiming at different energies in the spectrum) are the demonstrated path to overpass this limit and achieve efficiencies close to 40%, as done for three junctions (3J) on III-V and with 35% achievable by using a Si bottom junction (3J GaInP/GaAs/Si). Two tandems technologies have emerged as promising to upgrade the current Si technology: perovskites/Si and III-V/Si. III-V/Si presents the highest efficiency and stability (20-30years) but two orders of magnitude higher cost.
The ATACAMA project will develop the top junction for a III-V/Si tandem (AlGaAs/Si), with a drastic reduction in cost for the III-Vs by (1) ultra-thin absorbers using low-cost nanostructuring and (2) substrate multi-thin-epitaxial enable by a novel epitaxial lift-off process. Furthermore, the III-V/Si tandem has to attain a high efficiency (>30%)(3), that will ensure a cost-effective solution. Nevertheless, the tandem must ensure circularity (recyclable path) to split the Si from the III-V, by gluing with transparent polymers, with a melting point of 200°C, ensuring the possibility of easily recycling in the future the AlGaAs cell from the Si cell.

Fields of science (EuroSciVoc)

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Keywords

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Programme(s)

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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.

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.

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.

(opens in new window) HORIZON-MSCA-2022-PF-01

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Coordinator

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS
Net EU contribution

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.

€ 211 754,88
Total cost

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.

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