Publication date: 22nd July 2026
Metal-free halide perovskites are an inherently earth-abundant and non-toxic emerging class of materials, with broad application potential, from piezoelectric wearable devices to photodetectors. Much like their metal-halide perovskite counterparts, different properties can be accessed and tuned by introducing and mixing different ions in the ABX3 lattice. Yet, their potential is largely underexplored.
Mechanochemistry offers a powerful route into this parameter space: it is a processing strategy that is simple, fast, green, and easily upscalable. Surprisingly, beyond these practical advantages, it provides an additional dimension of control on the properties of metal-free perovskites. Tuning the impact energy during processing directly governs visible light absorption in these traditionally wide bandgap materials, while the fundamental properties, such as the crystal structure, remain the same.
This establishes mechanochemical processing conditions as a new and powerful tuning strategy, opening new doors into a material class we are only just beginning to scratch the surface of.
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