Search documents

Browse topics

Document details

Investigating the Influence of Sample Configuration on EVA Degradation Modes
C. Barretta, G. Oreski, L. Castillon, N. Kyranaki, D.E. Mansour, T.R. Betts, L. Pitta Bauermann, K. Resch-Fauster
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
0,00 EUR
Document(s): poster


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.