Analysis of Encapsulant Degradation in Desert Exposed Photovoltaic Modules with External Quantum Efficiency and UV-Fluorescence
| Autor: | Alheloo, A., Almheiri, A., Kumar, S., Adothu, B., John, J.J., Mathiak, G., Alberts, V. |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.4229/wcpec-82022-3dv.3.38 |
| Popis: | 8th World Conference on Photovoltaic Energy Conversion; 945-948 In 2015, a comparative study of different PV modules was started at the Outdoor Test Field at the DEWA R&D Center at the MBR Solar Park in Dubai. Thirty different module types (multi- and monocrystalline silicon) were tested, out of which two were picked for this study. Non-destructive techniques such as ultraviolet fluorescence imaging, visual inspection, and module external quantum efficiency analysis were used to detect the encapsulant degradation occurring on the modules, where UV-F visualizes the discoloration while module EQE quantifies and pinpoints the effect and causes. Results show that all modules show browning both under visual light and through UV-F, which was correlated to a loss in EQE in the shorter wavelengths corresponding to the UV range and rear side of the module. Affected regions within the cell show a reduced EQE over the entire spectrum, indicating a multi-layered effect on the cell’s packaging. |
| Databáze: | OpenAIRE |
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