From Event: SPIE Optical Engineering + Applications, 2018
Glass-Glass modules are gaining popularity for bifacial application and have believed advantages over PV modules with polymeric backsheets. Frameless glass-glass modules are promoted as PID-free, resistant to solvents, fire, and load stress, and capable of higher system voltages. We have found glass-glass modules run at higher operating temperature than Glass-Flex modules, and this reduces power output. Field power output results will be presented. Impermeable glass traps chemical byproducts, and faster power degradation from corrosion has been documented. Delamination has been observed in the field with glass-glass modules. A new accelerated test replicates this delamination. PID testing results will be presented comparing Glass-Glass and Glass-Flex modules.
Thomas C. Felder, Kaushik Roy Choudhury, Lucie Garreau-Iles, Steven MacMaster, Hongjie Hu, William J. Gambogi, and T. John Trout, "Analysis of glass-glass modules," Proc. SPIE 10759, New Concepts in Solar and Thermal Radiation Conversion and Reliability, 107590E (Presented at SPIE Optical Engineering + Applications: August 19, 2018; Published: 17 September 2018); https://doi.org/10.1117/12.2321637.
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