Twisting under the stroboscope – controlling crystal lattices of hybrid solar cell materials with terahertz light

https://www.fhi.mpg.de/1283827/2023-05-24-Twisting-Under-the-Stroboscope

"lead halide perovskite semiconductors... applying sudden electric field spike faster than picosecond single light cycle far-UV THz... inorganic crystal lattice periodic cages for hosting organic molecules... isolate lattice response to electric field timescales faster than 100 fs... mimic local electric field excited charge carrier immediately after absorption quantum of sunlight... charge carrier protection mechanism, crystallographic phase or electronic bandgap... modulate twist single THz light cycle"