Key degradation processes recognized in next-gen large bandgap perovskite photo voltaic cells
by Riko Seibo
Tokyo, Japan (SPX) Sep 17, 2025
A brand new examine in Supplies Futures sheds mild on the principle degradation pathways affecting scalable large bandgap (WBG) perovskite photo voltaic cells, a promising materials for tandem photo voltaic applied sciences. Researchers from imec, Hasselt College, and Ghent College in Belgium demonstrated how thermal stress – whether or not at midnight or beneath illumination – performs a central function in gadget instability.
Their outcomes present that beneath darkish circumstances, the cost transport layers fail first, whereas beneath mild publicity the perovskite absorber itself undergoes extreme degradation. The staff reached these conclusions by conducting accelerated stress checks following Worldwide Summit on Natural Photovoltaic Stability (ISOS) protocols, mapping out totally different degradation pathways with superior electrical characterization strategies.
WBG hybrid-organic lead halide perovskites are engaging for integration into tandem cells as a result of their robust opto-electronic properties. But, their poor stability at elevated temperatures and beneath mild has been a barrier to commercialization, largely as a result of section segregation of bromide and iodide species. The brand new findings reveal that stability can’t be seen as a single property, since totally different stress environments set off distinct failure mechanisms.
The researchers in contrast WBG perovskite cells to narrower bandgap gadgets, confirming that light-driven thermal stress accelerates section segregation and absorber breakdown. This reinforces the necessity for stabilization methods not simply on the materials stage, however throughout full gadgets and modules.
Future analysis will concentrate on nanoscale-level evaluation of degradation, broader stress testing together with out of doors deployment, and the event of commercial stability requirements. Such steps are essential earlier than WBG perovskite cells can advance from the laboratory to scalable, industrial purposes.
Analysis Report:In-Depth Study of Degradation in Scalable Wide Bandgap Perovskite Cells
Associated Hyperlinks
Songshan Lake Materials Laboratory
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