Programm Photovoltaik Ausgabe 2009 ... - Bundesamt für Energie BFE
Programm Photovoltaik Ausgabe 2009 ... - Bundesamt für Energie BFE Programm Photovoltaik Ausgabe 2009 ... - Bundesamt für Energie BFE
Eidgenössisches Departement für Umwelt, Verkehr, Energie und Kommunikation UVEK Bundesamt für Energie BFE FLEXCELLENCE: ROLL-TO-ROLL TECHNOLOGY FOR THE PRODUCTION OF HIGH EFFICIENCY LOW COST THIN FILM SILICON PHOTOVOLTAIC MODULES Annual Report 2008 Author and Co-Authors V. Terrazzoni, F-J. Haug, C. Ballif Institution / Company Institute of Microtechnology (IMT) / University of Neuchâtel Address Rue A.L. Breguet 2, 2000 Neuchâtel Telephone, E-mail, Homepage +41 32 718 33 30, vanessa.terrazzoni@epfl.ch / www.unine.ch/flex Project- / Contract Number SES-CT-019948 Duration of the Project (from – to) 01.10.2005 - 30.09.2008 Date 10.12.2008 ABSTRACT FLEXCELLENCE (www.unine.ch/flex) was a European project (STREP) financed under the 6 th framework program, which started on October 1 st 2005 and ended 3 years later in September 2008. IMT acted as a coordinator. The goal of the project was to develop the equipment and the processes for cost-effective roll-to-roll production of high-efficiency thin-film modules involving amorphous (a-Si:H) and microcrystalline silicon (µc-Si:H). Eight partners, with extended experience in the complementary fields of cells and processing, modules and interconnections, production, machinery and reliability were involved in this project, with IMT as coordinator. Globally, the project allowed significant progresses, both at the level of deposition process developpements, substrate preparation, equipment hardware and reliability testing, which are described in several publications and reports of the various parties involved. During the last year of the project, IMT was mainly involved in the development and optimisation of single a-Si:H and �c-Si:H cells as well as of tandem micromorph cells on plastic substrates. By adapting a special kind or intermediate reflectors for cells deposited on nano-structured plastic foils, a stabilised micromorph cell efficiency up to 9.8% on plastic could be achieved. 59/290
Introduction / Project Goals The goal of the project was to develop the equipment and the processes for cost-effective roll-to-roll production of high-efficiency thin-film modules. For this purpose, the different aspects necessary for a successful implementation of this production technology were considered simultaneously; indeed solar cell processing, monolithic interconnection, encapsulation and machinery were intensively studied in a close collaboration between the different partners. Project description and approach Specifically, The FLEXCELLENCE project aims at developing the equipment and the processes for the production of cost-effective and high efficiency flexible photovoltaic modules with a focus on: � In line roll-to-roll process, plastic and metallic substrates. � Si:H, µc-Si:H, and a-Si/µc-Si micromorph solar cells. � Si deposition: VHF and MW-PECVD, HW-CVD. To reach these goals, a collaborative and non-competitive consortium with complementary competences was set-up. It includes two equipment manufacturers, Roth&Rau (R&R) and Carl Baasel Lasertechnik (ROFIN), one module producer, VHF-Technologies (VHF), two research institutions Energy Research Center of the Netherland (ECN) and the Fraunhofer Institut für Elektronenstrahl und Plasmatechnik (FEP), and three universities, the University of Barcelona (UBA), the University of Ljubljana (UL-FEE) and the University of Neuchâtel (IMT), with various expertises in the field of solar cell fabrication, roll-to-roll processing, and opto-electronic simulations. Fig.1 describes the partners and their tasks within the consortium. Fig. 1: The Flexcellence consortium A short review of some major activities During the three years of the project, the following different aspects were studied simultaneously. A new 50cm width VHF-PECVD electrode prototype was developed in collaboration with VHF- Technologies/Flexcell, IMT and the Plasma Physics Research Centre at the EPFL as subcontractor. This prototype was successfully designed, tested and eighteen months later the first complete a-Si modules could be processed with equivalent performances as those prepared using the previous narrower reactor. The new electrode design was used in the setting up of the new 25 MW production capacity plant at VHF-Technologies. Flexcellence, V. Terrazoni, IMT Neuchâtel 60/290 2/4
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Eidgenössisches Departement <strong>für</strong><br />
Umwelt, Verkehr, <strong>Energie</strong> und Kommunikation UVEK<br />
<strong>Bundesamt</strong> <strong>für</strong> <strong>Energie</strong> <strong>BFE</strong><br />
FLEXCELLENCE: ROLL-TO-ROLL<br />
TECHNOLOGY FOR THE PRODUCTION OF<br />
HIGH EFFICIENCY LOW COST THIN FILM<br />
SILICON PHOTOVOLTAIC MODULES<br />
Annual Report 2008<br />
Author and Co-Authors V. Terrazzoni, F-J. Haug, C. Ballif<br />
Institution / Company Institute of Microtechnology (IMT) / University of Neuchâtel<br />
Address Rue A.L. Breguet 2, 2000 Neuchâtel<br />
Telephone, E-mail, Homepage +41 32 718 33 30, vanessa.terrazzoni@epfl.ch / www.unine.ch/flex<br />
Project- / Contract Number SES-CT-019948<br />
Duration of the Project (from – to) 01.10.2005 - 30.09.2008<br />
Date 10.12.2008<br />
ABSTRACT<br />
FLEXCELLENCE (www.unine.ch/flex) was a European project (STREP) financed under the 6 th<br />
framework program, which started on October 1 st 2005 and ended 3 years later in September 2008.<br />
IMT acted as a coordinator.<br />
The goal of the project was to develop the equipment and the processes for cost-effective roll-to-roll<br />
production of high-efficiency thin-film modules involving amorphous (a-Si:H) and microcrystalline silicon<br />
(µc-Si:H).<br />
Eight partners, with extended experience in the complementary fields of cells and processing, modules<br />
and interconnections, production, machinery and reliability were involved in this project, with IMT<br />
as coordinator.<br />
Globally, the project allowed significant progresses, both at the level of deposition process developpements,<br />
substrate preparation, equipment hardware and reliability testing, which are described in<br />
several publications and reports of the various parties involved.<br />
During the last year of the project, IMT was mainly involved in the development and optimisation of<br />
single a-Si:H and �c-Si:H cells as well as of tandem micromorph cells on plastic substrates. By adapting<br />
a special kind or intermediate reflectors for cells deposited on nano-structured plastic foils, a stabilised<br />
micromorph cell efficiency up to 9.8% on plastic could be achieved.<br />
59/290
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