New insights into halide perovskites might remodel photo voltaic cell know-how
by Robert Schreiber
Berlin, Germany (SPX) Sep 25, 2025
International electrical energy consumption is rising quickly, and researchers at Chalmers College of Expertise in Sweden have made progress towards creating next-generation photo voltaic cell supplies. Their work makes use of pc simulations and machine studying to raised perceive halide perovskites, that are light-weight, versatile, and extremely environment friendly however liable to instability.
In accordance with the Worldwide Power Company, electrical energy will account for over half of the world’s vitality use in 25 years, up from 20 p.c at the moment. “To fulfill the demand, there’s a vital and rising want for brand new, environmentally pleasant and environment friendly vitality conversion strategies, resembling extra environment friendly photo voltaic cells.
“Our findings are important to engineer and management some of the promising photo voltaic cell supplies for optimum utilisation. It is very thrilling that we now have simulation strategies that may reply questions that had been unresolved only a few years in the past,” stated Julia Wiktor, principal investigator and affiliate professor at Chalmers.
Halide perovskites are among the many strongest candidates for future photo voltaic applied sciences, providing excessive effectivity at low price and potential purposes starting from constructing coatings to LEDs. But, they degrade shortly and require deeper scientific understanding to enhance stability.
A important focus has been formamidinium lead iodide, a crystalline compound with wonderful optoelectronic properties however restricted use because of its instability. Researchers consider mixing perovskite sorts might resolve the problem, however such approaches demand exact data of their phases and interactions.
The Chalmers crew has now described the elusive low-temperature part of formamidinium lead iodide, offering lacking data wanted to design and management each this materials and its mixtures. “The low-temperature part of this materials has lengthy been a lacking piece of the analysis puzzle and we have now settled a elementary query in regards to the construction of this part,” defined Chalmers researcher Sangita Dutta.
By integrating machine studying with conventional modelling, the group prolonged simulation occasions hundreds of occasions longer than earlier than and scaled fashions from a whole bunch of atoms to thousands and thousands. These advances allowed unprecedented accuracy, later confirmed by experiments on the College of Birmingham, the place the fabric was cooled to -200oC to duplicate simulation circumstances.
“We hope the insights we have gained from the simulations can contribute to learn how to mannequin and analyse complicated halide perovskite supplies sooner or later,” stated Erik Fransson of the Division of Physics at Chalmers.
Analysis Report:Revealing the Low-Temperature Phase of FAPbI3 Using a Machine-Learned Potential
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Chalmers University of Technology
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