Publication date: 21st July 2025
Metal-halide perovskite (MHP) photovoltaic (PV) modules are progressing towards commercialization. One major hurdle that remains is establishing confidence in long-term field performance and durability of MHP modules. Field testing, failure analysis, and understanding of degradation mechanisms are essential to advancing this technology toward commercialization. Here, I will present a brief overview of recent results from the PV Accelerator for Commercializing Technologies, PACT, program. In addition, I will dig into performance data from up to 1 year of outdoor testing of MHP modules in Golden, Colorado and Albuquerque, New Mexico, USA. This talk will cover nondestructive and destructive characterization of field-tested modules points to use to determine the root cause of the observed failures. We find module scribes and interfaces as areas of potential mechanical weakness and chemical migration, resulting in shunt pathways and increased series resistance. Finally, we perform indoor accelerated stress testing with light and elevated temperatures, demonstrating failure with similar scribe degradation signatures as compared to the field-tested modules highlighting this as a possible screening test for field failures.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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