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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/00216275:25310/25:39923356

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Advanced Optical Materials

ISSN

2195-1071

e-ISSN

—

Svazek periodika

13

Číslo periodika v rámci svazku

29

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

11

Strana od-do

—

Kód UT WoS článku

001552882500001

EID výsledku v databázi Scopus

—