Objectif Quaternary dilute nitrides GaInPN and GaPAsN III-V alloys will be grown and characterized in view of elaborating tandem solar cells in which, the quaternary alloy will be lattice matched on a silicon substrate. With such alloys, by varying their composition, it is possible to decrease simultaneously the bandgap and the lattice constant, which is not possible with nitrogen free III-V alloys. The dilute nitrides will be grown by Metal Organic Vapour Phase Epitaxy and their aimed composition will be such that they will have both a bandgap around 1.7 eV and the silicon lattice constant. The materials elaborated will be characterized by X-ray diffraction, transmission electron microscopy, electrical and optical techniques. Their characteristics will be optimized for having electrical characteristics suitable for elaborating high efficiency tandem solar cells. A great attention will be paid on defects and impurity that could affect the electrical properties of the layers. In particular, carbon and hydrogen, issued from the precursors, that could be present in rather high concentration and that are suspected to play a negative role for the efficiency of the cells will be investigated. Tandem solar cells will be designed and elaborated and their characteristics will be optimized. Attention will be paid to anti reflection coatings compatible with the dilute nitrides. Mots‑clés Energy Technology & Conversion Interfaces & Microstructures Semiconductors Surfaces Programme(s) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Thème(s) Data not available Appel à propositions Data not available Régime de financement Data not available Coordinateur UNIVERSITÉ PIERRE ET MARIE CURIE PARIS VI Contribution de l’UE Aucune donnée Adresse RUE DE LOURMEL, 140 PARIS France Voir sur la carte Coût total Aucune donnée Participants (3) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire CENTRAL LABORATORY OF SOLAR ENERGY & NEW ENERGY SOURCES (BAS) Bulgarie Contribution de l’UE Aucune donnée Adresse TZARIGRADSKO CHAUSSEE, 72 SOFIA Voir sur la carte Coût total Aucune donnée CONSIGLIO NAZIONALE DELLE RICERCHE (CNR) Italie Contribution de l’UE Aucune donnée Adresse V.LE DELLE SCIENZE - CAMPUS UNIVERSITARIO, 37A FONTANINI-PARMA Voir sur la carte Coût total Aucune donnée INSTITUTE OF PHYSICS OF AZNAS Azerbaïdjan Contribution de l’UE Aucune donnée Adresse H. JAVID PROSPEKT, 33 BAKU Voir sur la carte Coût total Aucune donnée