Author:
Ghosh Soumen,Kabacinski Piotr,Hosseini Hemen,Li Shunran,Camargo Franco V.A.,Guo Peijun,Cerullo Giulio
Abstract
We have directly observed the vibrationally coherent formation of self-trapped excitons in perovskites using sub-30 fs UV-pumped transient absorption spectroscopy. Strongly damped, excited-state structural distortions promote its formation on a sub-110 fs time scale.