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ECN publication
Black, infrared reflecting backsheets for PV: where aesthetics meet performance
Published by: Publication date:
ECN Solar Energy 24-6-2016
ECN report number: Document type:
ECN-M--16-007 Conference Paper
Number of pages: Full text:
4 Download PDF  

To reduce cell-to-module (CtM) losses for aesthetically appreciated all-black modules we applied a black powder coating with low infrared absorption to standard back foils used in PV modules. Upon the application of such powder coating the IR reflective properties of the underlying substrate are largely preserved. For Cu foil substrates approximately 85% reflection in near-infrared was recorded, while for a white polyamide substrate reflection was 60%. These black, IR reflecting back foils were incorporated in single-cell laminates with n-Pasha bifacial solar cells. From these structures the potential Isc gain from the application of such coatings in PV modules as compared to conventional all-black modules is estimated to be 1.4 – 1.8%.

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