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@ARTICLE{Zhou:1052640,
author = {Zhou, Shuyu and Rehm, Viktor and Grizfeld, Roman and Liu,
Zihao and Han, Yufei and Hrbek, Tomáš and Matolínová,
Iva and Korczak, Jędrzej and Szczerbakow, Andrzej and
Story, Tomasz and Kot, Mordechai and Loi, Maria A. and Peng,
Zijian and Sotome, Masato and Kondo, Takashi and Forberich,
Karen and Lüer, Larry and Brabec, Christoph. J. and
Mergheim, Julia and Heiss, Wolfgang},
title = {{B}oosting the {P}erformance of {E}pitaxial {P}erovskite
{M}icrostructures by {S}urface {P}assivation},
journal = {Advanced optical materials},
volume = {14},
number = {1},
issn = {2195-1071},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2026-01014},
pages = {e03210},
year = {2026},
abstract = {Epitaxial growth enables the fabrication of films and
heterostructures with exceptional properties, particularly
when performed on single-crystalline substrates with a
suitable lattice type and lattice parameters. While
epitaxial growth is extensively utilized for conventional
semiconductors, epitaxial micro- and nanostructures of
lead-halide perovskites have also been successfully obtained
through vapor-phase and liquid-phase deposition techniques.
Surface passivation, widely employed in polycrystalline
perovskite films and single crystals to suppress surface
recombination of charge carriers, is often overlooked for
epitaxial structures due to the presumption that their
inherently smooth surfaces are free of defects. In this
study, surface passivation agents commonly used in colloidal
nanocrystal chemistry are investigated, such as
trioctylphosphine oxide (TOPO), or protective matrices like
poly (methyl methacrylate) (PMMA), to improve the
performance of epitaxially grown Formamidinium lead bromide
(FAPbBr3) and Cesium lead bromide (CsPbBr3) micro- and
nanostructures. These findings reveal that surface
passivation significantly boosts luminescence intensity and
decay times, reduces lasing thresholds to record-low levels
for microcrystalline perovskite lasers, and enhances the
specific detectivity of photoconductors. These advancements
are consistent across structures grown by both vapor
deposition and solution processing. This study highlights
the critical role of surface passivation for achieving the
full potential of epitaxially grown perovskite structures,
thereby paving the way for advanced optoelectronic
applications.},
cin = {IET-2},
ddc = {670},
cid = {I:(DE-Juel1)IET-2-20140314},
pnm = {1214 - Modules, stability, performance and specific
applications (POF4-121)},
pid = {G:(DE-HGF)POF4-1214},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001617916800001},
doi = {10.1002/adom.202503210},
url = {https://juser.fz-juelich.de/record/1052640},
}