Exciton-polaron-induced sub-bandgap ultrafast saturable absorption in perovskite CsPbBr3 A new mechanism for ultrafast nonlinear optical absorption Peer-Reviewed Publication Opto-Electronic ...

The technique, called asynchronous and interferometric transient absorption spectroscopy (AI-TA), provides ultrafast measurements of excited-state dynamics and structural transformations in light ...

The AI-TA technique was used to investigate how these transformations influence the ultrafast transient absorption spectra and charge carrier dynamics. (Image: IBS) Perovskite materials are considered ...

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By integrating the findings from ultrafast transient absorption spectra with theoretical calculations, the high catalytic activity observed is attributed to the efficient charge transfer process ...

An international team has succeeded at BESSY II to elucidate how ultrafast spin-polarized current pulses can be characterized by measuring the ultrafast demagnetization in a magnetic layer system ...

Transient absorption (TA) studies in aqueous environments with different viscosities show that photoinduced hole injection either proceeds ultrafast (<100 fs) or in a sub-ps time window. We assign the ...

Astronomers discover new supergiant fast X-ray transient, expanding rare class by Tomasz Nowakowski, Phys.org Editors' notes ...