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@ARTICLE{Wang:862527,
author = {Wang, Rui and Tong, Yu and Wang, Kun and Xia, Senlin and
Kentzinger, Emmanuel and Soltwedel, Olaf and
Müller-Buschbaum, Peter and Frielinghaus, Henrich},
title = {{M}onitoring the morphological evolution in
mixed-dimensional lead bromide perovskite film with
lamellar-stacked perovskite nanoplatelets},
journal = {Nanoscale horizons},
volume = {4},
number = {5},
issn = {2055-6764},
address = {Cambridge},
publisher = {Royal Society of Chemistry},
reportid = {FZJ-2019-02826},
pages = {1139-1144},
year = {2019},
abstract = {Mixed-dimensional lead bromide perovskite films combine the
properties of both three-dimensional (3D) and
two-dimensional (2D) perovskite crystals, and due to their
good humidity tolerance, they emerge as promising candidates
for long-term stable optoelectronic applications. In order
to further tailor the film morphology aiming for a better
device performance, it is important to unravel the
structural formation mechanism in these perovskite thin
films. In the present study, the formation of 3D lead
bromide perovskite crystals and the self-assembly of
lamellar-stacked 2D perovskite nanoplatelets are
comprehensively studied. Samples are prepared through a
two-step vapor assisted route with different vapor exposure
times in order to monitor the detailed morphology at the
specific reaction stage. With grazing incidence X-ray
scattering techniques, the preferential orientation of the
3D crystals is found to decrease upon increasing the
reaction time. Also, it is evidenced that well-ordered
in-plane lamellar-stacked 2D nanoplatelets form aggregates
in the bulk structure only. The obtained hierarchical
morphology shows excellent structural stability in a humid
atmosphere even at a relative humidity level of $80\%.$ Our
findings statistically offer a morphological understanding,
which is important for the optimization of the sample
preparation route and thus the resulting performance of
moisture-tolerant perovskite based optoelectronic devices.},
cin = {JCNS-FRM-II / MLZ / JCNS-1 / JCNS-2},
ddc = {540},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 / I:(DE-588b)4597118-3 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-2-20110106},
pnm = {144 - Controlling Collective States (POF3-144) / 6213 -
Materials and Processes for Energy and Transport
Technologies (POF3-621) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (POF3-623) / 6G15 - FRM II / MLZ
(POF3-6G15)},
pid = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-6213 /
G:(DE-HGF)POF3-6G4 / G:(DE-HGF)POF3-6G15},
experiment = {EXP:(DE-MLZ)KWS1-20140101 / EXP:(DE-MLZ)N-REX-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000481910600010},
doi = {10.1039/C9NH00156E},
url = {https://juser.fz-juelich.de/record/862527},
}