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@ARTICLE{GomesFerreira:632985,
author = {Gomes Ferreira, Matheus and Gastin, Baptiste and Hiller,
Jonas and Zaluzhnyy, Ivan and Hinsley, Gerard and Wang,
Bihan and Ngoi, Kuan Hoon and Vartaniants, Ivan and
Schreiber, Frank and Scheele, Marcus and Baranov, Dmitry},
title = {{S}elf-{A}ssembly of {Q}uantum-{C}onfined {C}s{P}b{B}r3
{P}erovskite{N}anocrystals into {R}hombic, {F}rame, and
{R}ectangular{S}uperlattices},
journal = {Small structures},
volume = {6},
number = {9},
issn = {2688-4062},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {PUBDB-2025-02311},
pages = {2500133},
year = {2025},
abstract = {Superlattices of quantum-confined perovskite nanocrystals
(5–6 nm) present an interesting example of colloidal
crystals because of the interplay between nanoscopic
parameters (nanocrystal sizes, shapes, and colloidal
softness) and the microscopic shapes of their assemblies.
These superlattices are reported as rectangular or rhombic,
with little discussion of the outcomes of self-assembly
experiments which are worthwhile to study given the rising
interest in the optical properties of these nanomaterials.
It is observed that various super-lattice shapes are
produced in a single solvent evaporation experiment from a
nanocrystal dispersion drop-casted onto a tilted substrate.
The observed shapes are categorized as rhombi, rectangles,
and hollow frames (including hollow rectangular frames,
nested structures, and interconnected fragments).The
influence of self-assembly conditions is studied by optical
microscopy, and the nanocrystal circularity, aspect ratio,
and size are quantified by transmission electron microscopy
with additional insights into the superlattice structure
provided by X-ray nano-diffraction. The results suggest that
rhombic shapes arise from a subpopulation of nanocrystals
with broader size and shape dispersions, whereas more
uniform nanocrystals form rectangular structures(either
solid or hollow). The solvent evaporation dynamics and
diffusion of the drying liquid contribute to forming more
complex shapes, such as nested frames and cracked and
multidomain superlattices.},
cin = {DOOR ; HAS-User / FS-PS / FS-PET-S / FS-PET-D},
ddc = {540},
cid = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)FS-PS-20131107 /
I:(DE-H253)FS-PET-S-20190712 / I:(DE-H253)FS-PET-D-20190712},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
DFG project G:(GEPRIS)426008387 - Optoelektronik
Synthetischer Mesokristalle (426008387) / DFG project
G:(GEPRIS)546072194 - Erhöhung von struktureller Kohärenz
und optischem Koppeln in Superkristallen aus Nanopartikeln
(546072194) / PROMETHEUS - Engineering of Superfluorescent
Nanocrystal Solids (101039683)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
G:(GEPRIS)426008387 / G:(GEPRIS)546072194 /
G:(EU-Grant)101039683},
experiment = {EXP:(DE-H253)P-P10-20150101},
typ = {PUB:(DE-HGF)16},
doi = {10.1002/sstr.202500133},
url = {https://bib-pubdb1.desy.de/record/632985},
}