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Snail Trails: Root Cause Analysis and Test Procedures

Authors :
Marcus Gläser
Sebastian Timmel
Christian Hagendorf
Martina Werner
S. Swatek
Sylke Meyer
Susanne Richter
Publica
Source :
Energy Procedia. 38:498-505
Publication Year :
2013
Publisher :
Elsevier BV, 2013.

Abstract

The “snail trail” discoloration effect observed at many PV modules after some time in the field was investigated with regard to their microscopic and chemical properties and environmental conditions. We show here the combined results of studies on defect modules after outdoor exposure as well as on mini modules after laboratory DH tests and provide a mechanistic model for the snail trail formation. Finally, we can show that a detailed chemical and physical characterization of encapsulation polymers is a fundamental prerequisite for quality assurance and reliability in solar module production.

Details

ISSN :
18766102
Volume :
38
Database :
OpenAIRE
Journal :
Energy Procedia
Accession number :
edsair.doi.dedup.....0b9378632ce0235c5f57743ce970fcf5
Full Text :
https://doi.org/10.1016/j.egypro.2013.07.309