Shedding light on the birth of hybrid perovskites: a correlative study by in situ electron microscopy and synchrotron-based x-ray scattering

An additional Friday publication update! Lead halide perovskites (LHPs) are the future of optoelectronic devices, thanks to their unique physical properties. Yet, the synthesis of MAPI perovskites via ligand-assisted reprecipitation (LARP) has so far not been researched.

In this groundbreaking study, advanced in-situ techniques were done with the #PoseidonAX and the #Atmosphere system to demystify the pathway leading to MAPI perovskites from precursor solutions.

️ Local insights from liquid-phase transmission electron microscopy (TEM) were used, combined with with global information obtained from synchrotron-based X-ray scattering measurements.

Next to LP-TEM, gas phase TEM was also performed to observe the transition from the solvated intermediate phase to the final MAPI perovskite during thermal treatment at 80°C. This uncovered direct evidence of crystal fragmentation alongside the structural transformation.

This approach highlights the tremendous value of in-situ correlative studies, providing profound insights into the synthesis and properties of emerging materials, including LHPs.

Want to read the entire paper?
https://doi.org/10.1016/j.jcat.2023.115106