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Title:
 
Investigating the Influence of Sample Configuration on EVA Degradation Modes
 
Author(s):
 
C. Barretta, G. Oreski, L. Castillon, N. Kyranaki, D.E. Mansour, T.R. Betts, L. Pitta Bauermann, K. Resch-Fauster
 
Topic:
 
Photovoltaic Modules and BoS Components
Subtopic: PV Module Design, Manufacture, Performance and Reliability
Event: 37th European Photovoltaic Solar Energy Conference and Exhibition
Session: 4AV.1.2
ISBN: 3-936338-73-6
 
Price:
 
 
0,00 EUR
 
Document(s): poster
 

Abstract/Summary:


Ethylene Vinyl Acetate (EVA) is widely used in photovoltaic (PV) modules as encapsulant material. Nevertheless, degradation mechanisms that EVA experiences during its lifetime within a module are still not completely understood. Consumption of additives and stabilizers, as well as degradation of the polymer chains due to humidity ingress and photo-degradation, might lead to degradation modes such as yellowing of the encapsulant, corrosion of metallic components and delamination between the interlayers of a PV module. Consequently, a decrease in power output, and eventually even the failure of the module itself might occur.