Description: Das Projekt "Von Rolle zu Modul hergestellte kristalline Silizium Dünnschichten für höher als 20% effiziente Module" wird vom Umweltbundesamt gefördert und von Fraunhofer-Institut für Solare Energiesysteme durchgeführt. Objective: The current technologies to produce photovoltaic modules exhibit features, which prevent cost-reduction to below 0,5 /Wp: - Sawing/Wafering and Module assembly is costly and material intensive for wafer solar cells - Efficiency is comparatively low for classical thin-film solar cells (CdTe, CIS, a-Si/myc-Si, dye, organic). One approach to avoid both disadvantages is the so-called crystalline Si thin-film lift-off approach, where thin c-Si layers are stripped from a silicon wafer. This approach has the potential to reach greater than 20% efficient solar cells, however handling issues stop quick progress so far. The basic idea of the current project is to enable the use of lift-off films in a nearly handling-free approach, to avoid limitations by handling issues. The technological realization has the following key features and steps: - Continuous separation of a very thin (deeper 10 mym) c-Si foil from the circumference of a monocrystalline silicon ingot - Attachment to a high-temperature stable substrate of large area (e.g. graphite, Sintered Silicon, or ceramics), which can also serve as module back side. - High-temperature re-organisation of the silicon foil followed by in-situ epitaxial thickening (ca 40 mym base thickness) in an in-line chemical vapour deposition reactor, including pn-junction formation - Processing of high-efficiency solar cells and formation of integrated interconnected high-voltage modules - Encapsulating into a module (glass / encapsulant only if needed) The resulting module to be demonstrated in R2M-Si has a cost potential around 0.55 /Wp, at 18 percent module efficiency and thus low Balance-of-System cost. Future enhanced R2M-Si modules can exceed even 20% efficiency, at costs below 0.5 /Wp. The project shall demonstrate the feasibility of the most critical process steps like continuous layer detachment, bonding to a carrier substrate, high-quality epitaxy, handling-free solar cell processing and module integration. As a deliverable, a mini module of higher than 18 percent efficiency shall be prepared. The project R2M-Si ( Roll to Module Silicon ) investigates an innovative approach of manufacturing modules of crystalline silicon thin-film solar cells.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Keramik ? Sinterung ? Tierhaltungsanlage ? Dünnschichtsolarzelle ? Graphit ? Silikon ? Substrat ? Tellurid ? Werkstoff ? Silizium ? Farbstoff ? Solarzelle ? Brüden ? Temperatur ? Kostensenkung ? Reaktor ? Abscheidung ? Bilanz ? Werkstoffkunde ? Wirkungsgrad ? Zelle ? Deposition ? Chemikalien ? Energieeinsparung ? REACH ? Energiesystem ? Kosteneffizienz ? Kosten ? Umweltschutz ? Anorganische Cadmiumverbindung ? Basen [chemisch] ? Bilanz [Betriebswirtschaft] ? Ablagerung ? Solarmodul ?
Region: Baden-Württemberg
Bounding box: 9° .. 9° x 48.5° .. 48.5°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 2010-10-01 - 2013-09-30
Webseite zum Förderprojekt
http://www.r2m-si.de/ (Webseite)Accessed 1 times.