https://doi.org/10.1051/epjconf/201920505020
Cooling dynamics of electrons in MAPbBr3 probed in the deep-UV
1 Laboratoire de Spectroscopie Ultrarapide, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
2 Department of Photonics, National Cheng Kung University, Tainan, Taiwan
* Corresponding author: t.rossi@epfl.ch
Published online: 16 April 2019
Transient absorption in the Visible and in the deep-UV is performed on MAPbBr3 thin films with 3.1 eV pump excitation. The UV probe can access higher order transitions in the material exploring different high-symmetry points of the Brillouin zone. Uncorrelated electron-hole pairs are generated within the instrument response function of 150 fs. The photobleaching at 3.3 eV shows that electron cooling happens in ~ 1 ps.
© The Authors, published by EDP Sciences, 2019
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