The speed of sound and elastic constants of Cs3Bi2I9, MA3Bi2I9, and MA3Sb2I9 single crystals were measured by femtosecond transient reflectivity, showing hybrid compounds are softer.
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The speed of sound and elastic properties of single crystals of inorganic and hybrid lead-free iodide perovskites obtained by femtosecond transient optical reflectivity
The speed of sound and elastic constants of Cs3Bi2I9, MA3Bi2I9, and MA3Sb2I9 single crystals were measured by femtosecond transient reflectivity, showing hybrid compounds are softer.