Synthesis of multinary Ag(InxCe1− x)S2/ZnS quantum dots obtained by substitution of In by Ce in AgInS2/ZnS quantum dots: A cost-effective method for the production of highly photoluminescent and color tunable nanocrystals
Abstract
Highly photoluminescent dodecanethiol (DDT)-capped Ag(InxCe1−x)S2 quantum dots (QDs) were prepared by a partial substitution (up to 75 mol%) of In3+ by Ce3+ in AgInS2 QDs. The photoluminescence (PL) emission of QDs can be tuned from visible to near-infrared by varying the (Ce + In)/Ag molar ratio or the x value (1, 0.75, 0.5 or 0.25). After ZnS shell formation, Ag(InxCe1−x)S2/ZnS QDs exhibit a higher PL quantum yield (up to 72.4%) and an increased PL decay lifetime compared to AgInS2/ZnS QDs. Moreover, the incorporation of Ce3+ into AgInS2 nanocrystals allows for a marked reduction of the blueshift observed during the shell formation on AgInS2 QDs. The obtained Ag(InxCe1−x)S2/ZnS QDs exhibit an average size of ca. 2–3 nm and a narrow size distribution. Using 3-mercaptopropionic acid (3-MPA) or the amphiphilic poly(maleic anhydride-alt-1-octadecene) (PMAO) polymer, oil-soluble Ag(InxCe1−x)S2/ ZnS QDs could be effectively transferred into the aqueous phase while retaining their optical properties. This substitution of In3+ by Ce3+ not only allows improvement of the optical properties of the nanocrystals but also leads to a reduction in their cost, which should favor the industrial development of Ag(InxCe1−x)S2/ZnS QDs.
Related
- Precursor Formulation Redirects Phase Competition and Thermal Evolution in Silver Multinary Chalcogenide Ag-M-Ch (M = Zr, Cr, Sn, Sb) Nanocrystals
- Phase-Selective Synthesis of Copper Phosphosulfide Nanocrystals.
- From Invasion to Innovation: Synthesis and Characterization of Carboxylated Cellulose Nanocrystals from Prosopis Cellulose and Its Evaluation for Copper(II) Removal from Aqueous Solutions
- Self-quenched growth of monodisperse SnO2 nanocrystals—insensitive to synthesis conditions
- Curcumin Nanocrystals: Synthesis, Optimisation and Prospects of Anticancer Activity Against Primarily Female-Associated Cancers
BibTeX
@article{chouchene2026synthesis,
title = {{Synthesis of multinary Ag(InxCe1− x)S2/ZnS quantum dots obtained by substitution of In by Ce in AgInS2/ZnS quantum dots: A cost-effective method for the production of highly photoluminescent and color tunable nanocrystals}},
author = {Bilel Chouchene and Hervé Rinnert and Lavinia Balan and Emilie Gaudry and Ghouti Medjahdi and Raphaël Schneider},
journal = {Journal of Materials Chemistry A},
year = {2026},
month = oct,
doi = {10.1039/d6ta03984g},
url = {https://hal.univ-lorraine.fr/hal-05787366v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Synthesis of multinary Ag(InxCe1− x)S2/ZnS quantum dots obtained by substitution of In by Ce in AgInS2/ZnS quantum dots: A cost-effective method for the production of highly photoluminescent and color tunable nanocrystals
AU - Bilel Chouchene
AU - Hervé Rinnert
AU - Lavinia Balan
AU - Emilie Gaudry
AU - Ghouti Medjahdi
AU - Raphaël Schneider
PY - 2026
DA - 2026/10/07
JO - Journal of Materials Chemistry A
DO - 10.1039/d6ta03984g
UR - https://hal.univ-lorraine.fr/hal-05787366v1
AB - Highly photoluminescent dodecanethiol (DDT)-capped Ag(InxCe1−x)S2 quantum dots (QDs) were prepared by a partial substitution (up to 75 mol%) of In3+ by Ce3+ in AgInS2 QDs. The photoluminescence (PL) emission of QDs can be tuned from visible to near-infrared by varying the (Ce + In)/Ag molar ratio or the x value (1, 0.75, 0.5 or 0.25). After ZnS shell formation, Ag(InxCe1−x)S2/ZnS QDs exhibit a higher PL quantum yield (up to 72.4%) and an increased PL decay lifetime compared to AgInS2/ZnS QDs. Moreover, the incorporation of Ce3+ into AgInS2 nanocrystals allows for a marked reduction of the blueshift observed during the shell formation on AgInS2 QDs. The obtained Ag(InxCe1−x)S2/ZnS QDs exhibit an average size of ca. 2–3 nm and a narrow size distribution. Using 3-mercaptopropionic acid (3-MPA) or the amphiphilic poly(maleic anhydride-alt-1-octadecene) (PMAO) polymer, oil-soluble Ag(InxCe1−x)S2/ ZnS QDs could be effectively transferred into the aqueous phase while retaining their optical properties. This substitution of In3+ by Ce3+ not only allows improvement of the optical properties of the nanocrystals but also leads to a reduction in their cost, which should favor the industrial development of Ag(InxCe1−x)S2/ZnS QDs.
SN - 2050-7488
SN - 2050-7496
ER -