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Process characterisation of MWT solar cells - a new method to analyse via contacts

: Reitenbach, V.

Volltext urn:nbn:de:0011-n-2365632 (233 KByte PDF)
MD5 Fingerprint: 705e04a48e07dbecca1d9245435acd3f
Erstellt am: 27.4.2013

Nowak, S. ; European Commission:
27th European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC 2012. DVD-ROM : Proceedings of the international conference held in Frankfurt, Germany, 24 - 28 September 2012
München: WIP-Renewable Energies, 2012
ISBN: 3-936338-28-0
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <27, 2012, Frankfurt>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ISE ()
PV Produktionstechnologie und Qualitätssicherung; Silicium-Photovoltaik; Industrielle und neuartige Solarzellenstrukturen

A newly developed characterisation method at Fraunhofer ISE allows a precise evaluation of via contact formation by determining the via resistance for metal wrap through (MWT) solar cells. Based on a previously presented via characterisation method for test structures, the new measurement setup is able to automatically characterise via-contacts directly on a solar cell. Due to its flexible design, the setup is adjustable to any cell size and any contact arrangement. The modified four point probe measurement setup with flat electrodes on the front and spiky electrodes on the rear of the cell facilitates the measurement and precise the alignment on a each MWT-via contact. The new device is an important characterisation instrument for the evaluation and optimization of via-contacts directly on cell level.