Objective 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. Keywords 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- Topic(s) Data not available Call for proposal Data not available Funding Scheme Data not available Coordinator UNIVERSITÉ PIERRE ET MARIE CURIE PARIS VI EU contribution No data Address RUE DE LOURMEL, 140 PARIS France See on map Total cost No data Participants (3) Sort alphabetically Sort by EU Contribution Expand all Collapse all CENTRAL LABORATORY OF SOLAR ENERGY & NEW ENERGY SOURCES (BAS) Bulgaria EU contribution No data Address TZARIGRADSKO CHAUSSEE, 72 SOFIA See on map Total cost No data CONSIGLIO NAZIONALE DELLE RICERCHE (CNR) Italy EU contribution No data Address V.LE DELLE SCIENZE - CAMPUS UNIVERSITARIO, 37A FONTANINI-PARMA See on map Total cost No data INSTITUTE OF PHYSICS OF AZNAS Azerbaijan EU contribution No data Address H. JAVID PROSPEKT, 33 BAKU See on map Total cost No data