Objectif The project undertakes the first complete, fundamental study of the fabrication and improvement of the interfaces involved in tandem and single junction a-Si:H solar cells. This requires a thorough understanding of the plasma and plasma/interface interactions involved in a-Si:H fabrication. We expect to be able to produce, at the end of the project, tandem and single junction solar cells with an initial efficiency of 12% and degradation of less than 15%. The primary aim of this collaborative project is to fabricate highly efficient, degradation-resistant single-junction and tandem a-Si:H solar cells. The a-Si cell technology is to be developed beyond current levels and understanding of the physical processes at work in the p-i-n structure is to be deepened. Our plan is to apply for the first time a comprehensive battery of in situ analysis techniques to the study and improvement of the interfaces, along with modelling of the performance and degradation of the interfaces and overall structure. We expect this investigation of interface quality to allow a significant improvement in the long-term performance of a-Si:H solar cells. We shall further investigate the performance of the highly stable i-layers deposited in non-standard conditions as part of the currently running Joule II contract (JoU2-CT92-0027. Moreover, we shall pursue the development of the very promising efficiency and enhanced stability in tandem cells. These advancements will enable us to produce single junction and tandem solar cells with an initial efficiency of 12% and a degradation inferior to 15%. More specifically the research tasks are : 1) Fundamental, in-depth study of the interfaces in p-i-n structures by insitu analysis techniques, and deposition process adaptation. 2) Development of novel single-junction and tandem structures incorporating degradation-resistant i-layers deposited under non-standard conditions and intrinsic and doped *cSi layers. 3) Metastability studies coupled with simulation of the efficiency and extensive characterization of the solar cells. Champ scientifique natural scienceschemical sciencesinorganic chemistrymetalloidsmedical and health sciencesmedical biotechnologycells technologies Programme(s) FP3-JOULE 2 - Specific research and technological development programme (EEC) in the field of non-nuclear energy, 1990-1994 Thème(s) 0304 - Renewable energies for rural electricity, local fuel and water Appel à propositions Data not available Régime de financement CSC - Cost-sharing contracts Coordinateur University of Patras Contribution de l’UE Aucune donnée Adresse University Campus-Rio 26110 Patras Grèce Voir sur la carte Coût total Aucune donnée Participants (3) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE France Contribution de l’UE Aucune donnée Adresse Route de Saclay Ecole Polytechnique 91128 PALAISEAU Voir sur la carte Coût total Aucune donnée UNIVERSITE DE NEUCHATEL Suisse Contribution de l’UE Aucune donnée Adresse 1,Rue A.-L. Brequet 2 2000 NEUCHATEL Voir sur la carte Coût total Aucune donnée Universidad de Barcelona Espagne Contribution de l’UE Aucune donnée Adresse 647,Diagonal 08028 Barcelona Voir sur la carte Coût total Aucune donnée