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@ARTICLE{Gnzler:904102,
author = {Günzler, Antonio and Bermúdez-Ureña, Esteban and
Muscarella, Loreta A. and Ochoa, Mario and Ochoa-Martínez,
Efraín and Ehrler, Bruno and Saliba, Michael and Steiner,
Ullrich},
title = {{S}haping {P}erovskites: {I}n {S}itu {C}rystallization
{M}echanism of {R}apid {T}hermally {A}nnealed,
{P}repatterned {P}erovskite {F}ilms},
journal = {ACS applied materials $\&$ interfaces},
volume = {13},
number = {5},
issn = {1944-8244},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2021-05672},
pages = {6854 - 6863},
year = {2021},
abstract = {Understanding and controlling the crystallization of
organic–inorganic perovskite materials is important for
their function in optoelectronic applications. This control
is particularly delicate in scalable single-step thermal
annealing methods. In this work, the crystallization
mechanisms of flash infrared-annealed perovskite films,
grown on substrates with lithographically patterned Au
nucleation seeds, are investigated. The patterning enables
the in situ observation to study the crystallization
kinetics and the precise control of the perovskite
nucleation and domain growth, while retaining the
characteristic polycrystalline micromorphology with larger
crystallites at the boundaries of the crystal domains, as
shown by electron backscattering diffraction. Time-resolved
photoluminescence measurements reveal longer charge carrier
lifetimes in regions with large crystallites on the domain
boundaries, relative to the domain interior. By increasing
the nucleation site density, the proportion of larger
crystallites is increased. This study shows that the
combination of rapid thermal annealing with nucleation
control is a promising approach to improve perovskite
crystallinity and thereby ultimately the performance of
optoelectronic devices.},
cin = {IEK-5},
ddc = {600},
cid = {I:(DE-Juel1)IEK-5-20101013},
pnm = {1212 - Materials and Interfaces (POF4-121)},
pid = {G:(DE-HGF)POF4-1212},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33513304},
UT = {WOS:000619638400095},
doi = {10.1021/acsami.0c20958},
url = {https://juser.fz-juelich.de/record/904102},
}