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@ARTICLE{Shen:638019,
author = {Shen, Zhou and Samoli, Margarita and Erdem, Onur and
Bielecki, Johan and Samanta, Amit K. and E, Juncheng and
Estillore, Armando D. and Kim, Chan and Kim, Yoonhee and
Koliyadu, Jayanath and Letrun, Romain and Locardi, Federico
and Lübke, Jannik and Mall, Abhishek and Monrroy Vilan e
Melo, Diogo Filipe and Mills, Grant and Rafie-Zinedine, Safi
and Round, Adam and Sato, Tokushi and de Wijn, Raphael and
Wollweber, Tamme and Worbs, Lena and Zhuang, Yulong and
Mancuso, Adrian P. and Bean, Richard and Chapman, Henry N.
and Küpper, Jochen and Infante, Ivan and Lange, Holger and
Hens, Zeger and Ayyer, Kartik},
title = {{D}irect {O}bservation of the {E}xciton-{P}olaron in
{S}ingle {C}s{P}b{B}r$_3$ {Q}uantum {D}ots},
journal = {ACS nano},
volume = {19},
number = {31},
issn = {1936-0851},
address = {Washington, DC},
publisher = {Soc.},
reportid = {PUBDB-2025-03967},
pages = {28372 - 28382},
year = {2025},
abstract = {The Outstanding optoelectronic properties of lead halide
perovskites have been related to the formation of polarons.
Nevertheless, the observation of the atomistic deformation
brought about by one electron–hole pair in these materials
has remained elusive. Here, we measure the transient
structure of single CsPbBr$_3$ quantum dots (QDs) after
resonant excitation in the single exciton limit using serial
femtosecond crystallography (SFX). By reconstructing the
three-dimensional (3D) differential diffraction pattern and
building on density functional theory (DFT) calculations, we
assign the lattice distortion after photoexcitation to the
combined presence of a delocalized electron and a localized
hole, forming a mixed large/small exciton-polaron. This
result creates a clear picture of the polaronic deformation
in CsPbBr$_3$ QDs and demonstrates the exceptional
sensitivity of SFX to lattice distortions in few-nanometer
crystallites. We plan to use this experimental platform for
future studies of electron–lattice interactions.},
cin = {FS-CFEL-CMI / UNI/CUI / UNI/EXP / MPSD-CNI / FS-CFEL-1},
ddc = {540},
cid = {I:(DE-H253)FS-CFEL-CMI-20220405 /
$I:(DE-H253)UNI_CUI-20121230$ /
$I:(DE-H253)UNI_EXP-20120731$ / I:(DE-H253)MPSD-CNI-20241210
/ I:(DE-H253)FS-CFEL-1-20120731},
pnm = {631 - Matter – Dynamics, Mechanisms and Control
(POF4-631) / AIM, DFG project G:(GEPRIS)390715994 - EXC
2056: CUI: Advanced Imaging of Matter (390715994)},
pid = {G:(DE-HGF)POF4-631 / G:(GEPRIS)390715994},
experiment = {EXP:(DE-H253)CFEL-Exp-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40751687},
doi = {10.1021/acsnano.5c06716},
url = {https://bib-pubdb1.desy.de/record/638019},
}