Quasi-simultaneous laser soldering for the interconnection of back-contact solar cells with composite foils

Simon W. Britten; Rumitha Seva Bala Sundaram; Alexander Olowinsky; Arnold Gillner

doi:10.1117/12.2040523

6 March 2014 Quasi-simultaneous laser soldering for the interconnection of back-contact solar cells with composite foils

Simon W. Britten, Rumitha Seva Bala Sundaram, Alexander Olowinsky, Arnold Gillner

Author Affiliations +

Proceedings Volume 8968, Laser-based Micro- and Nanoprocessing VIII; 89680V (2014) https://doi.org/10.1117/12.2040523
Event: SPIE LASE, 2014, San Francisco, California, United States

Abstract

In this contribution we evaluate laser scanning approaches for the interconnection of the 31 electrical contacts of a MWT back-contact solar cell. The selective energy deposition with a laser system allows the minimization of thermomechanical stress in the wafer, but requires adapted scanning strategies to prevent damages in the solar cell top layer. The laser scanning process of the MWT solar cell is conducted in combination with a composite foil as an interconnector and a pre-dispensed solder paste. This approach is evaluated regarding the joining quality of the interconnection as a function of the scanning strategy.

Citation Download Citation

Simon W. Britten, Rumitha Seva Bala Sundaram, Alexander Olowinsky, and Arnold Gillner "Quasi-simultaneous laser soldering for the interconnection of back-contact solar cells with composite foils", Proc. SPIE 8968, Laser-based Micro- and Nanoprocessing VIII, 89680V (6 March 2014); https://doi.org/10.1117/12.2040523

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