Chalmers Researchers Make Breakthrough in Halogenide Perovskites for Solar Cells
Researchers at Chalmers University of Technology have made significant strides in understanding and managing halogenide perovskites. Their work, combining standard methods with machine learning, enables simulations with millions of atoms and longer durations, paving the way for optimising these materials for high-efficiency solar cells and sustainable energy.
The team's progress is particularly notable with formamidinium lead iodide (FAPbI3), a key material for efficient solar cells but previously hindered by instability. Collaborators from the University of Birmingham, Benjamin M. Gallant and Dominik J. Kubicki, confirmed the simulations by Chalmers researchers, marking a significant breakthrough.
The low-temperature phase of FAPbI3, a missing piece in research, has now been clarified. The team found that mixing two types of halogenide perovskites could resolve the instability issue, but further insights are needed. Remarkably, computer simulations of FAPbI3 matched lab experiment results when cooled to -200 degrees Celsius.
Halogenide perovskites, with their potential for cheaper, flexible, and lighter solar cells and optoelectronic devices, are promising for sustainable energy. As worldwide electricity demand is projected to increase, making up more than 50 percent of total energy consumption in 25 years, these findings are crucial for developing new, efficient, and environmentally friendly energy conversion methods.
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