Easy technique boosts sturdiness of perovskite photo voltaic cells in real-world settings
by Clarence Oxford
Los Angeles CA (SPX) Could 21, 2025
A analysis group on the Federal College of ABC (UFABC) in Sao Paulo has developed a novel technique to scale back the degradation of perovskite photo voltaic cells, probably clearing a path towards their broader business adoption. The examine instantly addresses one of many important obstacles to real-world use: the fast efficiency loss these cells face when uncovered to ambient humidity and temperatures.
Perovskite photo voltaic cells rival silicon in effectivity and are cheaper to fabricate. They’re light-weight, versatile, and semi-transparent, permitting use in functions starting from photo voltaic home windows to energy-generating tents. Nevertheless, their restricted sturdiness underneath typical environmental circumstances has been a important problem.
The UFABC group, supported by FAPESP and Shell via the Heart for Innovation on New Energies (CINE), efficiently fabricated perovskite photo voltaic cells underneath regular ambient conditions-without the managed humidity and temperature typical of lab environments. “The photo voltaic cells on this work have been obtained underneath ambient circumstances, with out main humidity controls, which can be extra suitable with industrial preparation circumstances,” mentioned examine coordinator Professor Andre Sarto Polo.
Specializing in compositional tuning, the researchers modified methylammonium-based perovskites by steadily including formamidinium (FA+) cations. The ensuing supplies have been then used to manufacture photo voltaic cells, all processed and examined in environments with 40% to 60% relative humidity.
Over a 90-day testing interval underneath ambient circumstances, cells with larger FA+ content material considerably outperformed these with out. Gadgets with over 25% FA+ retained 80% of their preliminary effectivity, whereas these with no FA+ degraded fully inside 30 days.
“This work demonstrates how the incorporation of FA+ cations into MA+-based perovskites causes a rise within the sturdiness of perovskite photo voltaic cells fabricated and measured underneath ambient circumstances,” Polo acknowledged.
He famous that the FA+ cations enlarge the crystalline grain measurement within the perovskite construction, lowering edge areas the place moisture tends to build up and provoke degradation. This microstructural change helps the photo voltaic cells maintain efficiency longer underneath sensible circumstances.
The findings, a part of doctoral analysis by Lucas Polimante, recommend a scalable and fewer resource-intensive path to manufacturing longer-lasting perovskite photo voltaic cells.
Analysis Report:Enhancing the stability of methylammonium-based perovskite solar cells prepared in ambient conditions by adding formamidinium cations
Associated Hyperlinks
Fundacao de Amparo a Pesquisa do Estado de Sao Paulo
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