Amine-Free CsPbBr3 Perovskite Nanoplatelets Produced with Monolayer-Precision Thickness Control
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F24%3A10255177" target="_blank" >RIV/61989100:27740/24:10255177 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acsmaterialslett.4c00670" target="_blank" >https://pubs.acs.org/doi/10.1021/acsmaterialslett.4c00670</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsmaterialslett.4c00670" target="_blank" >10.1021/acsmaterialslett.4c00670</a>
Alternative languages
Result language
angličtina
Original language name
Amine-Free CsPbBr3 Perovskite Nanoplatelets Produced with Monolayer-Precision Thickness Control
Original language description
Ultrathin lead halide perovskite nanoplatelets (NPLs) can enable tunable emission across the entire visible spectrum of light. The band-gap tunability of NPLs does not require halide composition engineering, so halide segregation can be avoided. However, their photoluminescence quantum yield (PLQY) and optoelectronic applications are often hampered due to reversible protonation and deprotonation of conventional amine ligands. Herein, we demonstrate the synthesis of benzenesulfonate-terminated CsPbBr3 NPLs without the use of any amine, and we clarify their nucleation and growth mechanism. The thickness of amine-free NPLs is controlled with monolayer-level precision, and thus, their emission wavelength is tuned between 437 and 504 nm. Amine-free NPLs are solely terminated by a benzenesulfonate group, leading to a Cs-rich surface. The amine-free NPLs exhibit PLQYs up to 80%, and slow charge carrier relaxation. This work offers a comprehensive study of surface chemistry and ligand dynamics of perovskite NPLs.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20500 - Materials engineering
Result continuities
Project
—
Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Materials Letters
ISSN
2639-4979
e-ISSN
2639-4979
Volume of the periodical
6
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
2425-2433
UT code for WoS article
001228035800001
EID of the result in the Scopus database
2-s2.0-85194111284