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@ARTICLE{BuyanArivjikh:639636,
author = {Buyan-Arivjikh, Altantulga and Fricker, Jascha and Baier,
Thomas and Ci, Xiaojing and Li, Lixing and Gaur, Deepika and
Polavarapu, Lakshminarayana and Schwartzkopf, Matthias and
Vayalil, Sarathlal Koyilot and Müller-Buschbaum, Peter},
title = {{C}s{P}b{B}r$_3$ {N}anocrystals as {B}ottom {I}nterface
{N}ucleation {S}eeds for {P}rinting {O}riented {FAP}b{I}$_3$
{T}hin {F}ilms: {A}n {I}n {S}itu {S}tudy},
journal = {Small},
volume = {21},
number = {39},
issn = {1613-6810},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {PUBDB-2025-04593},
pages = {e05895},
year = {2025},
abstract = {The exceptional optoelectronic properties of lead halide
perovskites are highly sensitive to processing conditions,
as uncontrolled crystallization driven by random nucleation
often results in defect-rich active layers that impair
device performance. Achieving controlled and oriented
crystallization in printed films remains a major challenge.
To address this, we introduce a pre-deposited CsPbBr3
nanocrystal seed layer at the bottom interface to guide
crystallization and suppress defect formation. This strategy
is evaluated via an in situ study on FAPbI3, offering
mechanistic insights into the influence of seeding on film
growth and optoelectronic quality. Using in situ
grazing-incidence wide-angle X-ray scattering,
transmission-mode UV–vis absorption, and photoluminescence
spectroscopy, phase evolution and seed-mediated growth
kinetics are tracked. Seeding accelerates the transition
from the photoinactive δ-phase to the photoactive α-phase,
yielding a crystallization rate constant over six times
higher than in unseeded films. Moreover, the seed layer
governs the crystallographic orientation of the resulting
perovskite film, leading to improved optical absorption and
reduced defect density.},
cin = {FS-PETRA-D / DOOR ; HAS-User},
ddc = {620},
cid = {I:(DE-H253)FS-PETRA-D-20210408 /
I:(DE-H253)HAS-User-20120731},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
DFG project G:(GEPRIS)390776260 - EXC 2089: e-conversion
(390776260)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
G:(GEPRIS)390776260},
experiment = {EXP:(DE-H253)P-P03-20150101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40831314},
doi = {10.1002/smll.202505895},
url = {https://bib-pubdb1.desy.de/record/639636},
}