Fine Line Double Printing and Advanced Process Control for Cell Manufacturing. (April 2015)

• Record Type: Journal Article
• Authors: Galiazzo, Marco; Voltan, Alessandro; Bortoletto, Emiliano; Zamuner, Martina; Martire, Marco; Borsato, Oscar; Bertazzo, Matteo; Tonini, Diego
• Is Part Of: Energy procedia. Volume 67(2015)
• Page Start: 116
• Page End: 125
• Publication Date: 2015-04
• Subjects: Metallization -- c-Si cells -- Screen Printing; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2015.03.295
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: In this paper the latest applications of screen printing technology for solar cell metallization are reviewed. The principal achievement is 36 μm Double Printing finger width allowing +0.2% absolute efficiency gain compared to baseline Single Printing process. Dedicated rheology analysis of Ag pastes and measurements of equivalent optical finger width have been performed to have a better understanding of optimal process conditions, together with Stencil Printing experiments, showing the viability of Stencil Printing only for laboratory applications. In the last section, Advanced Printing Control is introduced as a potential enabler of controlled deposit on fingers and busbars, aiming at an increased process window and further cost savings.