Skip to main content
European Commission logo
polski polski
CORDIS - Wyniki badań wspieranych przez UE
CORDIS
CORDIS Web 30th anniversary CORDIS Web 30th anniversary
Zawartość zarchiwizowana w dniu 2024-06-18

Roll to Module processed Crystalline Silicon Thin-Films for higher than 20% efficient modules

Cel

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/µc-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 > 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 (< 10 µm) 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 (~40 µm 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% 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% efficiency shall be prepared.

Zaproszenie do składania wniosków

FP7-ENERGY-2010-FET
Zobacz inne projekty w ramach tego zaproszenia

Koordynator

FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG EV
Wkład UE
€ 890 318,75
Adres
HANSASTRASSE 27C
80686 Munchen
Niemcy

Zobacz na mapie

Region
Bayern Oberbayern München, Kreisfreie Stadt
Rodzaj działalności
Research Organisations
Kontakt administracyjny
Maximilian Steiert (Mr.)
Linki
Koszt całkowity
Brak danych

Uczestnicy (6)