In situ durability of EVA polymer encapsulant with optical analysis techniques for photovoltaic conversion applications

Kamel Agroui; Gernot Oreski

doi:10.1117/12.2525373

9 September 2019 In situ durability of EVA polymer encapsulant with optical analysis techniques for photovoltaic conversion applications

Kamel Agroui, Gernot Oreski

Author Affiliations +

Proceedings Volume 11121, New Concepts in Solar and Thermal Radiation Conversion II; 111210G (2019) https://doi.org/10.1117/12.2525373
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

The aim of these investigations was to identify and evaluate appropriate degradation indicators for PV encapsulation materials in order to qualify new and emergent polymeric components and to predict the lifetime of materials and modules. Therefore, the influence of the relevant stress parameters like ultraviolet radiation, corrosion environment and temperature-humidity cycles on the degradation behavior of EVA selected as encapsulant material had to be determined. Therefore, the material properties and the aging behavior were characterized by optical and thermal analysis techniques by infrared (IR) spectroscopy in attenuated total reflection mode (ATR), UV/VIS spectroscopy, photoluminescence spectroscopy analysis, Raman analysis and differential scanning calorimetric (DSC) analysis. Different degradation indicators were derived from the characterization methods and explicitly discussed considering the required property profile of polymers for PV encapsulation materials. Here, we describe a fast and non-destructive optical method to determine the EVA indoor aging.

Conference Presentation

Citation Download Citation

Kamel Agroui and Gernot Oreski "In situ durability of EVA polymer encapsulant with optical analysis techniques for photovoltaic conversion applications", Proc. SPIE 11121, New Concepts in Solar and Thermal Radiation Conversion II, 111210G (9 September 2019); https://doi.org/10.1117/12.2525373

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