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Investigations on the pre-breakdown of multicrystalline silicon solar cells

: Kwapil, W.; Kasemann, M.; Giesecke, J.; Michl, B.; Warta, W.

Fulltext urn:nbn:de:0011-n-2097035 (490 KByte PDF)
MD5 Fingerprint: d5d5f1b5d80e84da2c51c28207c55916
Created on: 5.9.2012

Lincot, D. ; European Commission, Joint Research Centre -JRC-:
The compiled state-of-the-art of PV solar technology and deployment. 23rd European Photovoltaic Solar Energy Conference, EU PVSEC 2008. Proceedings. CD-ROM : Held in Valencia, Spain, 1 - 5 September 2008; Proceedings of the international conference
München: WIP-Renewable Energies, 2008
ISBN: 3-936338-24-8
ISBN: 978-3-936338-24-9
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <23, 2008, Valencia>
Conference Paper, Electronic Publication
Fraunhofer ISE ()

The voltage characteristics of the pre-breakdown behavior of industrial multicrystalline silicon solar cells is investigated via dark lock-in thermography (DLIT) and electroluminescence (EL) measurements which yield information about the spatial distribution of the reverse currents and thus of the heat generation. We observe three almost discrete stages of pre-breakdown which can be correlated with surface effects, recombination active regions and regions without significant carrier lifetime reduction, respectively. Our measurements show that in breakdown, the largest currents flow through regions that are not recombination active.