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  4. Applications of parallel dispensing in PV metallization
 
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2019
  • Konferenzbeitrag

Titel

Applications of parallel dispensing in PV metallization

Abstract
This study provides a summary of latest solar cell results achieved with parallel dispensing equipment that will be commercialized by a Fraunhofer ISE spin-off (HighLine Technology GmbH) within the next year. The goal was to show alternative process routes for the PV back-end, some of them without any laser or screen printing steps involved. On the front surface of conventional PERC solar cells, an efficiency of imax = 21.9% was reached applying 150 parallel dispensed contacts with a finger width of only wf = 17 µm but still excellent contacting behavior. Successful applications of fire through Al pastes were demonstrated on bifacial p-PERC and n-PERT samplings. On the latter, the Voc gap to a dispensed AgAl reference was only DVoc = −1.7mV which shows that a potential replacement of Ag by Al is possible once a better conductivity of Al-FT pastes is achieved. On HJT solar cells, dispensed Ag and AgCu contacts were demonstrated by applying commercial available low temperature screen printing pastes with the former outperforming the screen printed reference by Di = +0.3%abs reaching imax = 22.2% at a substantial decrease of Ag paste laydown.
Author(s)
Pospischil, M.
Riebe, T.
Jimenez, A.
Kuchler, M.
Tepner, S.
Geipel, T.
Ourinson, D.
Fellmeth, T.
Breitenbücher, M.
Buck, T.
Dhamrin, M.
Clement, F.
Hauptwerk
8th Workshop on Metallization and Interconnection for Crystalline Silicon Solar Cells 2019. Proceedings
Konferenz
Workshop on Metallization & Interconnection for Crystalline Silicon Solar Cells 2019
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DOI
10.1063/1.5125870
Language
Englisch
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