TEMPO molecule approach advances perovskite photo voltaic cell sturdiness and effectivity
by Erica Marchand
Paris, France (SPX) Could 26, 2025
A crew of researchers has launched a novel technique to dramatically improve the efficiency and stability of perovskite photo voltaic cells, overcoming a longstanding barrier to their widespread use. The method, featured in Joule, employs the molecule TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) and a quick infrared heating pulse to restore inner crystal defects throughout the photo voltaic cell materials.
Led by the Ecole Polytechnique Federale de Lausanne (EPFL) and supported by the College of Utilized Sciences and Arts of Western Switzerland (HES-SO) and the Politecnico di Milano, the research demonstrates that this bulk passivation approach considerably will increase efficiency-surpassing 20%-while sustaining efficiency for months beneath real-world circumstances.
Utilizing positron annihilation spectroscopy, the researchers confirmed that TEMPO remedy reduces vacancy-type defects throughout the perovskite layer. This quick, solvent-free technique can also be suitable with scalable roll-to-roll manufacturing processes, much like these used within the printing trade.
“The proposed technique is quick, solvent-free, and suitable with roll-to-roll processing, much like that used within the printing trade. This makes the expertise promising not simply within the lab, but additionally for future industrial-scale manufacturing,” stated Rafael Ferragut, physicist on the Politecnico di Milano and co-author of the paper.
The findings signify a leap towards business manufacturing of light-weight and sturdy photo voltaic panels that could possibly be built-in into buildings or utilized in versatile electronics and wearable units.
Analysis Report:TEMPO bulk passivation boosts the performance and operational stability of rapid-annealed FAPI perovskite solar cells
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Politecnico di Milano
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