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Influence of the Lamination Pressure on the Adhesion, Degree of Cross-Linking, and Bubble Formation of PV Modules
S. Sraisth, A.K. Öz, D. Klaus, C. Wellens, M. Heinrich
Lamination, Gel Content, Pressure, Peel test, PV
Photovoltaic Modules and BoS Components
Subtopic: PV Module Design and Manufacturing
Event: 8th World Conference on Photovoltaic Energy Conversion
Session: 3DV.1.17
823 - 829
ISBN: 3-936338-86-8
Paper DOI: 10.4229/WCPEC-82022-3DV.1.17
0,00 EUR
Document(s): paper, poster


The lamination parameters can significantly influence the process to make it defect-free and faster or slower, depending on the production need. In this paper, one of these parameters will be discussed, i.e., lamination pressure. This study is focused only on the pressure influence on the glass-backsheet (GB) modules and further compares the differences in two different encapsulant types, Ethylene-Vinyl Acetate (EVA) and Polyolefin Elastomer (POE). The pressure values tested vary from 500 mbar to 1450 mbar. The paper has presented a detailed study of lamination pressure influence on some of the critical characteristics of the PV module, which can impact the module’s reliability, namely gel content, peel strength, and bubble formation. The degree of crosslinking for encapsulants was also compared using DSC and Soxhlet measurement methods. The results show that the lamination pressure above atmospheric value significantly influences the visual quality of PV modules.