AI Article Synopsis
- Understanding how AgInS nanoparticles grow can enhance the design and application of I-III-VI nanomaterials in fields like photonics and optoelectronics.
- Using specific chemical precursors and controlled environments, researchers synthesized different structures of AgInS nanoparticles through one-pot methods, revealing unique growth mechanisms depending on the reaction conditions.
- The research showed that the photoluminescence quantum yield (PLQY) of certain nanoparticles was higher, indicating potential for better performance in optical applications.
Article Abstract
Understanding the growth mechanism of AgInS nanoparticles could benefit the designed growth of I-III-VI nanomaterials and their applications in photonics, optoelectronics, etc. Herein, using tris(dibutyldithiocarbamate) indium(III) [In((CH)NCS)] ([InR]) and dibutyldithiocarbamate silver(I) [Ag((CH)NCS)] ([AgR]) precursors, AgInS-based nanoparticles with different structures have been synthesized in a controlled manner through a one-pot approach via different growth mechanisms in 1-dodecanethiol (DDT) and oleylamine (OLA), respectively. The DDT and OLA could participate in the decomposition of precursors; thus, the [AgR]/DDT, [InR]/DDT, [AgR]/OLA, and [InR]/OLA were used herein to describe the decomposition steps. In DDT, the decomposition activity of [AgR]/DDT was much higher than that of [InR]/DDT; thus, the sequential decomposition of [AgR]/DDT and [InR]/DDT led to the formation of the AgS nanoparticles intermediate first, which then reacted with [InR]/DDT to form metastable -AgInS nanoparticles via the cation exchange and alloy process, and finally evolved into -AgInS@InS core@shell nanoparticles, while in OLA, the decomposition activity of [AgR]/OLA was slightly higher than that of [InR]/OLA. Thus, the quasi-co-decomposition of [AgR]/OLA and [InR]/OLA led to the formation of Ag-rich Ag-In-S amorphous nanoparticles intermediate first and then quickly evolved into stable -AgInS/InS nanoparticles. In addition, the photoluminescence quantum yield (PLQY) of -AgInS/InS nanoparticles was higher than that of -AgInS@InS nanoparticles.
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| http://dx.doi.org/10.1021/acs.inorgchem.4c04037 | DOI Listing |
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