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ECN publication
Corrosion resistance test based on electrochemical noise-limiting the number of long-lasting and costly climate chamber tests
Published by: Publication date:
ECN Solar Energy 30-9-2013
ECN report number: Document type:
ECN-M--13-030 Conference Paper
Number of pages: Full text:
3 Download PDF  

Damp-heat testing of PV modules is a time-consuming process, taking months. The electrochemical noise (EcN) set-up is a fast, direct corrosion measurement of solar cells, whereby results can be obtained within one hour. EcN measurements are presented for several solar cell concepts and different environments. It correlates with damp-heat degradation involving corrosion, which is rather common in EVA-encapsulated crystalline Si modules. Furthermore, the EcN test can be done as an evaluation tool when probing alternative brands, formulations or processing for metallisation pastes and as a screening test for new batches of metallisation paste.

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