Description du projet
Cellules solaires innovantes à base de C-Si avec un rendement de conversion accru
La technologie des cellules solaires au silicium cristallin (C-Si) domine le marché photovoltaïque en raison de la disponibilité et de la stabilité de ces cellules. Toutefois, pour conserver cette position, il importe que l’efficacité de la conversion soit améliorée et que les coûts diminuent. Sans ces avancées, les cellules solaires C-Si risquent de perdre leur place prépondérante. Dans cette optique, le projet SiTaSol, financé par l’UE, vise à augmenter les rendements de conversion des cellules solaires C-Si pour les porter à 30 %. Ce résultat sera obtenu en les combinant avec des absorbeurs supérieurs III-V, ce qui permettra de réduire considérablement la surface au sol et la consommation de matériaux pour la production d’électricité photovoltaïque. Le projet présente des avantages évidents par rapport aux produits existants. Par ailleurs, l’équipe entend étudier divers procédés rentables qui permettront de remplacer les cellules photovoltaïques terrestres à plaques de Si par des cellules tandem III-V/Si.
Objectif
Crystalline silicon wafer solar cells have been dominating the photovoltaic market so far due to the availability and stability of c-Si and the decades of Si technology development. However, without new ways to improve the conversion efficiencies further significant cost reductions will be difficult and the c-Si technology will not be able to maintain its dominant role. In the SiTaSol project we want to increase conversion efficiencies of c-Si solar cells to 30 % by combining it with III-V top absorbers. Such a tandem solar cell will result in huge savings of land area and material consumption for photovoltaic electricity generation and offers clear advantages compared to today’s products. The III-V/Si tandem cell with an active Si bottom junction with one front and back contact is a drop-in-replacement for today’s Si flat plate terrestrial PV. To make this technology cost competitive, the additional costs for the 2-5 µm Ga(In)AsP epitaxy and processing must remain below 1 €/wafer to enable module costs <0.5 €/Watt-peak. It is the intention of the SiTaSol project to evaluate processes which can meet this challenging cost target and to proof that such a solar cell can be produced in large scale. Key priorities are focused on the development of a new growth reactor with efficient use of the precursor gases, enhanced waste treatment, recycling of metals and low cost preparation of the c-Si growth substrate. High performance devices will be demonstrated in an industrial relevant environment. The project SiTaSol approaches these challenges with a strong industrial perspective and brings together some of the most well-known European partners in the field of Si PV and III-V compound semiconductors. Furthermore SiTaSol will support the competitiveness of the European industry by providing innovative solutions for lowering manufacturing costs of III-V materials which are essential in today’s electronic products including laptops, photonic sensors and light emitting diodes.
Champ scientifique
CORDIS classe les projets avec EuroSciVoc, une taxonomie multilingue des domaines scientifiques, grâce à un processus semi-automatique basé sur des techniques TLN.
CORDIS classe les projets avec EuroSciVoc, une taxonomie multilingue des domaines scientifiques, grâce à un processus semi-automatique basé sur des techniques TLN.
- engineering and technologyenvironmental engineeringwaste managementwaste treatment processesrecycling
- engineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringsensorsoptical sensors
- engineering and technologyelectrical engineering, electronic engineering, information engineeringelectrical engineeringpower engineeringelectric power generation
- engineering and technologymaterials engineeringcoating and films
- engineering and technologyenvironmental engineeringenergy and fuelsrenewable energysolar energyphotovoltaic
Programme(s)
Régime de financement
RIA - Research and Innovation actionCoordinateur
80686 Munchen
Allemagne