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Post-Processing Thickness Variation of PV Module Materials and its Impact on Temperature, Mechanical Stress and Power

: Pfreundt, A.; Yucebas, D.; Beinert, A.J.; Verissimo Mesquita, L.; Pitta Bauermann, L.; Romer, P.; Mittag, M.

Volltext urn:nbn:de:0011-n-5654884 (930 KByte PDF)
MD5 Fingerprint: c3e457797c4d056b3251dbc88d4e470d
Erstellt am: 29.11.2019

36th European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC 2019 : Proceedings of the international conference held in Marseille, France, 09-13 September 2019
Marseille, 2019
ISBN: 3-936338-60-4
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <36, 2019, Marseille>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ISE ()
Photovoltaik; Photovoltaische Module und Kraftwerke; Modultechnologie; Gebrauchsdauer- und Schadensanalyse; gains; efficiency; PV-modules; simulation; thickness

We measure the thickness of the encapsulation layers in photovoltaic modules using scanning acoustic microscopy and optical microscopic imaging. Based on the measurement data, we analyze the impact of thickness variation on the operating temperature of the module, its peak power and mechanical stresses in the solar cells during lamination and under load testing conditions. Especially in cell-free areas we find an inhomogeneous thickness attributed to a bending of the backsheet, which has a small impact on the backsheet coupling gain. Even though we find significant deviation in the thicknesses of the encapsulation layer of up to 150 μm, the impact of encapsulant thickness under the investigated conditions is small and mainly attributed to changes in operating temperature.