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

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

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

Author(s) -

Simon W. Britten,

Rumitha Seva Bala Sundaram,

Alexander Olowinsky,

Arnold Gillner

Publication year - 2014

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.2040523

Subject(s) - materials science , interconnection , soldering , solar cell , wafer , laser scanning , laser , composite number , optoelectronics , composite material , solar energy , optics , computer science , electrical engineering , physics , computer network , engineering

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

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