Thermal/Water-Stable CsPbX3@SiOx Core-Shell Quantum Dots for Inkjet Printing and Potential Color Converting Applications

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0199419" target="_blank" >RIV/00216305:26620/26:0199419 - isvavai.cz</a>

Alternative codes found

RIV/00216275:25310/25:39923356

Result on the web

<a href="https://advanced.onlinelibrary.wiley.com/doi/10.1002/adom.202500968" target="_blank" >https://advanced.onlinelibrary.wiley.com/doi/10.1002/adom.202500968</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adom.202500968" target="_blank" >10.1002/adom.202500968</a>

Result language

angličtina

Original language name

Thermal/Water-Stable CsPbX3@SiOx Core-Shell Quantum Dots for Inkjet Printing and Potential Color Converting Applications

Original language description

Ligand-mediated surface passivation is widely used to fill defect sites and stabilize perovskite nanoparticles, keeping their photophysical properties unchanged. However, this strategy can promote the growth of agglomerates, quenching the luminescence of nanoparticles. Additionally, the presence of bulky ligands can hinder the interparticle carrier transport, difficulting the fabrication of efficient optoelectronic devices. In this work, the synthesis of SiOx-covered CsPbX3 PQDs (CsPbX3@SiOx) is performed through a modified ligand-assisted reprecipitation method (LARP), by adding 3-aminopropyl-triethoxysilane (APTES) and oleic acid to the mixture reaction. Here, it is possible to suppress the aggregates formation, achieving water-stable single core-shell PQDs with a photoluminescence quantum yield of up to 99.4% and facile bandgap modulation by varying the halide content. Accordingly, CsPbX3@SiOx PQDs inks are obtained for preparing inkjet-printed QR codes and color converters, with stable luminescence up to 1.5 and 9 h of continuous operation at 2.5 V for Cl/Br- and Br-perovskites, respectively. Interestingly, a PL splitting is observed for the Br/I-perovskite along the time, indicating the emergence of halide migration to generate Br- and I-rich domains, mediating the generation of white color emission. This contribution offers a prominent alternative to producing single PQDs with suitable optical properties and stability for developing promising LED technologies.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Advanced Optical Materials

ISSN

2195-1071

e-ISSN

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Volume of the periodical

13

Issue of the periodical within the volume

29

Country of publishing house

DE - GERMANY

Number of pages

11

Pages from-to

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UT code for WoS article

001552882500001

EID of the result in the Scopus database

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