Synthesis, characterization and stability study of aqueous MPA capped CuInS2/ZnS core/shell nanoparticles

Jain, Shikshita; Bharti, Shivani; Bhullar, Gurvir Kaur; Tripathi, Satyendra Kumar

doi:10.1016/j.jlumin.2022.119279

Cited by 12 publications

(6 citation statements)

References 73 publications

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“…Jain et al ( Jain et al, 2022 ) synthesized aqueous mercaptopropionic acid (MPA)-capped CuInS 2 /ZnS TQDs through the hydrothermal method. To obtain the core structure, an aqueous solution of CuCl 2 , InCl 3 , thiourea, and MPA was prepared at pH 11.3.…”

Section: Methods For the Synthesis Of Tqdsmentioning

confidence: 99%

Integration of ternary I-III-VI quantum dots in light-emitting diodes

et al. 2023

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Ternary I-III-VI quantum dots (TQDs) are semiconductor nanomaterials that have been gradually incorporated in the fabrication of light-emitting diodes (LEDs) over the last 10 years due to their physicochemical and photoluminescence properties, such as adequate quantum yield values, tunable wavelength emission, and easy synthesis strategies, but mainly because of their low toxicity that allows them to be excellent candidates to compete with conventional Cd-Pb-based QDs. This review addresses the different strategies to obtain TQDs and how synthesis conditions influence their physicochemical properties, followed by the LEDs parameters achieved using TQDs. The second part of the review summarizes how TQDs are integrated into LEDs and white light-emitting diodes (WLEDs). Furthermore, an insight into the state-of-the-art LEDs development using TQDs, including its advantages and disadvantages and the challenges to overcome, is presented at the end of the review.

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Section: Methods For the Synthesis Of Tqdsmentioning

confidence: 99%

Integration of ternary I-III-VI quantum dots in light-emitting diodes

et al. 2023

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“…Due to the wide band gap (~3.7 eV) of the ZnS shell and its low lattice mismatch (2.2%) with the I-III-VI type QDs, ZnS is used as a shell material to eliminate the defects of QDs and passivate their surface, resulting in an improvement of fluorescence properties. Jain et al [ 22 ] synthesized CIS QDs using 3-mercaptopropionic acid (MPA) as the ligand using a hydrothermal method. The particle diameter was 6.6 nm.…”

Section: Plqy Improvement Strategies Of I-iii-vi Type Qdsmentioning

confidence: 99%

“…In order to improve the PLQY Due to the large specific surface area of QDs, a large number of dangling bonds on the surface of QDs can be used as non-radiative recombination centers of excitons, resulting in the decline of fluorescence properties of QDs. In order to improve the PLQY value of I-III-VI type QDs, ZnS [22,53,54] or CdS [55,56] with wide band gaps are usually used to embed the QDs to limit electrons and holes to the interior of the QDs, and thus eliminate the surface states and reduce the overlap of electron/hole wave functions, which effectively improves the radiation recombination efficiency of QDs [57]. Do et al [58] prepared Zn-Ag-In-S/Zn-In-S/ZnS core/shell/shell QDs using a multi-step thermal injection method.…”

Section: Optical Properties and Luminescence Mechanismmentioning

confidence: 99%

“…Although the ligand exchange provides a viable way for the hydrophilic transformation of QDs, the tedious exchange steps as well as the large decay of fluorescence properties greatly restrict its application [ 19 , 20 ]. Therefore, the preparation of I-III-VI QDs in an aqueous phase environment has been attracting more and more attention in recent years [ 21 , 22 , 23 ]. In addition, the fluorescence intensity and stability of multiple QDs still need to be improved because of the different reactivity of various cations contained in multiple QDs, which makes the internal defects of the crystal more numerous.…”

Section: Introductionmentioning

confidence: 99%

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A Review on Multiple I-III-VI Quantum Dots: Preparation and Enhanced Luminescence Properties

Chen

et al. 2023

Materials

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I-III-VI type QDs have unique optoelectronic properties such as low toxicity, tunable bandgaps, large Stokes shifts and a long photoluminescence lifetime, and their emission range can be continuously tuned in the visible to near-infrared light region by changing their chemical composition. Moreover, they can avoid the use of heavy metal elements such as Cd, Hg and Pb and highly toxic anions, i.e., Se, Te, P and As. These advantages make them promising candidates to replace traditional binary QDs in applications such as light-emitting diodes, solar cells, photodetectors, bioimaging fields, etc. Compared with binary QDs, multiple QDs contain many different types of metal ions. Therefore, the problem of different reaction rates between the metal ions arises, causing more defects inside the crystal and poor fluorescence properties of QDs, which can be effectively improved by doping metal ions (Zn2+, Mn2+ and Cu+) or surface coating. In this review, the luminous mechanism of I-III-VI type QDs based on their structure and composition is introduced. Meanwhile, we focus on the various synthesis methods and improvement strategies like metal ion doping and surface coating from recent years. The primary applications in the field of optoelectronics are also summarized. Finally, a perspective on the challenges and future perspectives of I-III-VI type QDs is proposed as well.

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“…Aqueous techniques become even more relevant in the case of I-III-VI nanocrystals, which are typically synthesized in nonpolar media employing aliphatic thiols as coordinating ligands, resulting in the strong coordination of surface groups and hindering ligand exchange. The synthesis of ternary and quaternary QDs in aqueous medium can be achieved using a various types of capping ligands such as thiols [15,16], amino-acids [17][18][19], polymers [20,21], etc., providing excellent long-term colloidal stability.…”

Section: Introductionmentioning

confidence: 99%

Temperature- and Size-Dependent Photoluminescence of CuInS2 Quantum Dots

Korepanov,

Kozodaev,

Aleksandrova

et al. 2023

Nanomaterials

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We present the results of a temperature-dependent photoluminescence (PL) spectroscopy study on CuInS2 quantum dots (QDs). In order to elucidate the influence of QD size on PL temperature dependence, size-selective precipitation was used to obtain several nanoparticle fractions. Additionally, the nanoparticles’ morphology and chemical composition were studied using transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The obtained QDs showed luminescence in the visible–near infrared range. The PL energy, linewidth, and intensity were studied within an 11–300 K interval. For all fractions, a temperature decrease led to a shift in the emission maximum to higher energies and pronounced growth of the PL intensity down to 75–100 K. It was found that for large particle fractions, the PL intensity started to decrease, with temperature decreasing below 75 K, while the PL intensity of small nanoparticles remained stable.

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Synthesis, characterization and stability study of aqueous MPA capped CuInS2/ZnS core/shell nanoparticles

Cited by 12 publications

References 73 publications

Integration of ternary I-III-VI quantum dots in light-emitting diodes

Integration of ternary I-III-VI quantum dots in light-emitting diodes

A Review on Multiple I-III-VI Quantum Dots: Preparation and Enhanced Luminescence Properties

Temperature- and Size-Dependent Photoluminescence of CuInS2 Quantum Dots

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