Position of barrier movies in sustaining the steadiness of perovskite photo voltaic cells
by Riko Seibo
Tokyo, Japan (SPX) Jan 31, 2025
Perovskite photo voltaic cells (PSCs) supply a promising development in renewable power on account of their excessive effectivity, light-weight, and versatile properties. Nevertheless, their business viability is challenged by their vulnerability to environmental circumstances, significantly warmth and humidity.
To sort out this problem, a analysis staff led by Professor Takashi Minemoto, a Fellow on the Ritsumeikan Superior Analysis Academy, alongside Dr. Abdurashid Mavlonov from Ritsumeikan College’s Analysis Group of Science and Know-how and Dr. Akinobu Hayakawa from Sekisui Chemical Co., Ltd., performed an in-depth research on the sturdiness of PSC modules underneath harsh environmental circumstances. Their analysis, printed in Quantity 286 of *Photo voltaic Power* on January 15, 2025, was first made accessible on-line on December 17, 2024.
Discussing the research’s motivation, Prof. Minemoto acknowledged, “Perovskite photo voltaic cells stand out as significantly promising on account of their low-temperature wet-coating course of and compatibility with versatile substrates, providing distinctive alternatives for the photo voltaic business. Nevertheless, the steadiness of perovskite is weak in contrast with typical materials, which will be improved by fabrication processes akin to encapsulation with barrier movies.”
For this analysis, the staff analyzed the sturdiness of versatile PSC modules produced from methylammonium lead iodide (MAPbI3) and encapsulated them utilizing polyethylene terephthalate (PET) substrates with barrier movies of various water vapor transmission charges (WVTR). These modules had been subjected to a moist warmth check at 85 C and 85% relative humidity to duplicate long-term out of doors circumstances.
After 2,000 hours of publicity, researchers measured photovoltaic (PV) efficiency and assessed module degradation utilizing current-voltage traits, spectral reflectance, and electroluminescence imaging. The findings confirmed that top humidity brought about the MAPbI3 layer to interrupt down into lead iodide, obstructing cost transport and considerably decreasing the effectivity of the PSC modules.
Furthermore, the research demonstrated the important function of barrier movies in sustaining module stability. Notably, the module with the bottom WVTR barrier retained 84% of its preliminary energy conversion effectivity, whereas modules with increased WVTR deteriorated quickly, ceasing to perform after simply 1,000 hours.
“Our research is the primary to report the sturdiness of encapsulated versatile MAPbI3-based PSC modules. When contemplating photo voltaic power functions for partitions and rooftops with weight limits or for cell platforms, versatile PSCs are an excellent various to the normal silicon panels. Insights from our research might assist industries optimize these modules for extremely steady and sturdy constructs,” defined Prof. Minemoto.
This analysis underscores the important function of barrier movies in making certain the long-term viability of versatile PSC modules, which might reshape the photovoltaic business. By enabling power technology in quite a lot of areas, these developments assist alleviate strain on energy grids. Moreover, enhancing the sturdiness of PSCs expands their usability throughout completely different environments, additional accelerating the worldwide transition to cleaner and extra sustainable power options.
Analysis Report:Perovskite solar cell modules: Understanding the device degradation via damp heat testing
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