Basic Study on the Influence of Glass Composition and Aluminum Content on the Ag/Al Paste Contact Formation to Boron Emitters. (April 2015)

• Record Type: Journal Article
• Authors: Körner, S.; Kiefer, F.; Peibst, R.; Heinemeyer, F.; Krügener, J.; Eberstein, M.
• Is Part Of: Energy procedia. Volume 67(2015)
• Page Start: 20
• Page End: 30
• Publication Date: 2015-04
• Subjects: n-type solar cell -- front-side metallization -- glass viscosity -- aluminum content -- in-situ-contact resistance; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2015.03.284
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: In this study, the contact formation of aluminum containing silver metallization pastes for boron emitters was investigated. Model pastes with varied glass composition (PbO-containing and PbO-free) and Al content were prepared. It was found, that glass viscosity as well as Al content have a strong influence on densification behavior of the pastes. The most significant effect of the aluminum addition is the change of the thermodynamic conditions in the system silver-glass-silicon. For investigations of the contact formation an in-situ-contact resistance measurement was performed. The interface morphology of the pastes in dependence on the firing temperature was investigated by means of cross section samples in SEM and EDX. Finally, n-type Si solar cells were electrically characterized and the IV-data were correlated to the interface morphology.