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ECN publicatie:
Titel:
First experiments on module assembly line using back-contact solar cells
 
Auteur(s):
Späth, M.; Jong, P.C. de; Bennett, I.J.; Visser, T.P.; Bakker, J.; Verschoor, A.J.
 
Gepubliceerd door: Publicatie datum:
ECN Zonne-energie 4-2-2008
 
ECN publicatienummer: Publicatie type:
ECN-M--08-015 Conferentiebijdrage
 
Aantal pagina's: Volledige tekst:
5 Download PDF  (916kB)

Gepresenteerd op: 23rd European Photovoltaic Solar Energy Conference and Exhibition, Valencia, Spain, 1-5 september 2008.

Samenvatting:
There is a great need for cost-effective high-throughput equipment to assemble thin and high-efficiency solar cells into modules. Single-step assembly using back-contact cells (monolithic module assembly) provides substantial advantages in terms of performance and costs. Progress towards development of a commercial module and assembly process using back-contact cells and monolithic module assembly is described. A fully operational pilot line consisting of dedicated equipment to process back-contact cell modules with the focus on the production of 4 x 9 and up to 6 x 10 cells configuration was build by TTA/Eurotron and ECN. The emphasis is on the production of modules with ultra-thin back-contact cells of mc-Si (156 x 156 mm2) and only 130 µm in thickness. The design of the equipment is targeting for a throughput rate of 1 cell per second, or equivalently a module production capacity of 100 MWp per year. Processing of the first set of modules shows good results in terms of process reliability and yield. The overall yield for the first series of 23 modules (4 x 9 configuration) built with ECN-MWT cells was 100% while 9 of the 23 modules had a fill factor better than 74%. In addition, a series of 25 modules (6 x 10 configuration) with industrial back-contact cells was built and revealed excellent reproducibility. A standard deviation of the FF of only (s) 1.44 was observed.


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