Published

Matière Condensée

Time-resolved photoemission spectroscopy of electronic cooling and localization in CH$_3$ NH$_3$ PbI$_3$ crystals

Published on - Physical Review Materials

Authors: Zhesheng Chen, Min-I Lee, Zailan Zhang, Hiba Diab, Damien Garrot, Ferdinand Lédée, Pierre Fertey, Evangelos Papalazarou, Marino Marsi, Carlito Ponseca, Emmanuelle Deleporte, Antonio Tejeda, Luca Perfetti

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We measure the surface of CH$_3$ NH$_3$ PbI$_3$ single crystals by making use of two photon photoemission spectroscopy. Our method monitors the electronic distribution of photoexcited electrons, explicitly discriminating the initial thermalization from slower dynamical processes. The reported results disclose the fast dissipation channels of hot carriers (0.25 ps), set a upper bound to the surface induced recombination velocity (