| Issue |
EPJ Web Conf.
Volume 205, 2019
XXI International Conference on Ultrafast Phenomena 2018 (UP 2018)
|
|
|---|---|---|
| Article Number | 06019 | |
| Number of page(s) | 3 | |
| Section | Cluster, Gas Phase and Exciton Dynamics | |
| DOI | https://doi.org/10.1051/epjconf/201920506019 | |
| Published online | 16 April 2019 | |
https://doi.org/10.1051/epjconf/201920506019
Monitoring hot exciton dissociation in hybrid lead halide perovskite films with sub-10 fs pulses
Institute of Chemistry, The Hebrew University, Jerusalem 91904, Israel
* Corresponding author: sandy@mail.huji.ac.il
Published online: 16 April 2019
Sub-10 fs pump-probe experiments on methylammonium lead halide (MAPbI3) perovskite films show hot exciton dissociation in 20 fs after photo-excitation with ~0.7 eV excess energy compared to its optical band gap (BG). Coherent wave packets were also detected in the form of spectral modulation, revealing electron-phonon coupling in these materials. The estimated electron-phonon coupling strengths from the frequency and amplitude of the detected spectral modulation are in the weak regime, suggesting formation of large polaron.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.