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CIS thin film solar cells on flexible substrates

Objective



The projects aims at the realization of flexible solar modules based on the CIS (CuInSe2) -technology which is the most promising in the area of thinfilm solar modules. Flexible solar cells are envisaged from two reasons: - low-cost fabrication due to lower material need and high-speed in-lineprocessing,
- the properties flexibility and light-weight will open a wide scope ofapplications which are today unaccessible with rigid solar modules(indoor and out-door, automotive and space applications).
The approach of the project is to choose appropriate flexible and low-cost substrate materials, e.g. steel or aluminum foils, adapt all the module manufacturing processes to the demands of the substrate, which means to develop alternative process sequences, to optimize deposition and treatment parameters and to introduce new encapsulation technologies.
The project also includes the use of polymer films as substrates which requires intensive modifications of the CIS deposition process since this normally requires temperatures outside the stability range of most polymers. A stable manufacturing process for reliable, high-efficency (up to 14%), high stability solar modules using the CIS technology developed by the partners in the proposal and modified for the flexible substrates will be the result of the project.
The flexible substrates will allow to realize a roll-to-roll manufacturing process with the advantage of high through-put and low costs. All process steps will be analyzed with respect to their suitability for such a type of manufacturing and a concept of a roll-to-roll manufacturing equipment will be designed.
A manufacturing cost estimate will show, whether the costs can be driven below the figures given in the APAS MUSIC-FM study (concerning high-volume fabrication of solar modules).

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

Zentrum für Sonnenenergie- und Wasserstoff-Forschung,Baden-Württemberg
Address
21 C0,hessbrühlstrasse
70565 Stuttgart
Germany

Participants (7)

Balzers Process Systems GmbH
Germany
Address
Siemensstrasse 100
63755 Alzenau
CENTRO DE INVESTIGACIONES ENERGETICAS, MEDIAMBIENTALES Y TECNOLOGICAS
Spain
Address
22,Avenida Complutense 22
28040 Madrid
Eidgenössische Technische Hochschule - ETH Zürich
Switzerland
Address
1,Technoparkstrasse
8005 Zürich
ISOVOLTA OESTERREICHISCHE ISOLIERSTOFFWERKE AG
Austria
Address
20,Vianovastrasse 20
8402 Werndorf Bei Graz
Nordic Solar Energy AB
Sweden
Address

164 21 Kista
UNIVERSITAET STUTTGART
Germany
Address
Pfaffenwaldring 47
70569 Stuttgart
UPPSALA UNIVERSITY
Sweden
Address
Laederhyddsvaegen 1
751 21 Uppsala