A new procedure to synthesis of ZnS1−xSex nanoparticles by a facile solvothermal method

Mendil, R.; Ayadi, Z. Ben; Vázquez–Vázquez, C.; López‐Quintela, M. Arturo; Djessas, K.

doi:10.1007/s10854-018-9129-6

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…The calculated lattice parameters for the hexagonal ZnSe thin films before the insertion of Au nanosheet was found to be a = 4.051 and c = 6.354 Å. These values are consistent with literature data [6]. The insertion of Au changed the lattice parameters to a = 4.066 and c = 6.376 Å.…”

Section: Resultssupporting

confidence: 88%

Enhancement of electrical performance of ZnSe thin films via Au nanosandwiching

Qasrawi

Taleb

2020

Materials Science-Poland

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In this work, we report the effect of sandwiching of Au nanosheets on the structural and electrical properties of ZnSe thin films. The ZnSe films which are grown by the thermal evaporation technique onto glass and yttrium thin film substrates exhibit lattice deformation accompanied with lattice constant extension, grain size reduction and increased defect density upon Au nanosandwiching. The temperature dependent direct current conductivity analysis has shown that the 70 nm thick Au layers successfully increased the electrical conductivity by three orders of magnitude without causing degeneracy. On the other hand, the alternating current conductivity studies in the frequency domain of 10 MHz to 1800 MHz have shown that the alternating current conduction in ZnSe is dominated by both of quantum mechanical tunneling and correlated barrier hopping of electrons over the energy barriers formed at the grain boundaries. The Au nanosheets are observed to increase the density of localized states near Fermi level and reduce the average hopping energy by ~5 times. The conductivity, capacitance, impedance and reflection coefficient spectral analyses have shown that the nanosandwiching of Au between two layers of ZnSe makes the zinc selenide more appropriate for electronic applications and for applications which need microwave cavities.

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Section: Resultssupporting

confidence: 88%

Enhancement of electrical performance of ZnSe thin films via Au nanosandwiching

Qasrawi

Taleb

2020

Materials Science-Poland

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“…On the contrary, the synthesis of Zn based cQDs in aqueous solutions is attractive and relatively easy [8,9] because lower reaction temperature is required and the ligand exchange step is eliminated. But, synthetic chemistry to prepare colloidal alloyed ZnSSe quantum dots is still challenging because of unbalanced reactivities of precursors and the requirement of high reaction temperatures [10][11][12]. Colloidal nanoalloys offer flexibility to tune bandgap by alloy composition but keeping particle size constant [13], which is a desired feature for many applications.…”

Section: Introductionmentioning

confidence: 99%

Mn²⁺ ions incorporated into ZnS _x Se_1−x colloidal quantum dots: controlling size and composition of nanoalloys and regulating magnetic dipolar interactions

2021

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A facile synthesis method is introduced how to prepare magnetically active ultraviolet emitting manganese ions incorporated into ZnS x Se1−x colloidal quantum dot (nanoalloy) at 110 °C in aqueous solutions. The reaction time is the main factor to control the hydrodynamic size from 3 to 10 nm and the precursor ratio is significant to tune the alloy composition. ZnS shell layer on the ZnS x Se1−x core was grown to passivate environmental effects. The nanoalloy has ultraviolet emission at 380 nm having a lifetime of 80 ns and 7% quantum yield. The incorporation of Mn2+ ions into the nanoalloys induced magnetic activity but did not modify the structure and photophysical properties of the nanoalloys. Colloidal and powdery samples were prepared and analyzed by electron paramagnetic resonance (EPR) spectroscopy. In the colloidal dispersions, EPR spectra showed hyperfine line splitting regardless of the Mn2+ ion fractions, up to 6%, indicating that Mn2+ ions incorporated into the nanoalloys were isolated. EPR signals of the powdery samples were broadened when the fraction of Mn2+ ions was higher than 0.1%. The EPR spectra were simulated to reveal the locations and interactions of Mn2+ ions. The simulations suggest that the Mn2+ ions are located on the nanoalloy surfaces. These findings infer that the magnetic dipolar interactions are regulated by the initial mole ratio of Mn/Zn and the physical state of the nanoalloys adjusted by preparation methods.

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Enhanced optical properties of ZnSexS1-x and Mn-doped ZnSexS1-x QDs via non-toxic synthetic approach

Chylii

Loghina

Kaderavkova

et al. 2022

Materials Chemistry and Physics

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A new procedure to synthesis of ZnS1−xSex nanoparticles by a facile solvothermal method

Cited by 6 publications

References 23 publications

Enhancement of electrical performance of ZnSe thin films via Au nanosandwiching

Enhancement of electrical performance of ZnSe thin films via Au nanosandwiching

Mn²⁺ ions incorporated into ZnS _x Se_1−x colloidal quantum dots: controlling size and composition of nanoalloys and regulating magnetic dipolar interactions

Enhanced optical properties of ZnSexS1-x and Mn-doped ZnSexS1-x QDs via non-toxic synthetic approach

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A new procedure to synthesis of ZnS1−xSex nanoparticles by a facile solvothermal method

Cited by 6 publications

References 23 publications

Enhancement of electrical performance of ZnSe thin films via Au nanosandwiching

Enhancement of electrical performance of ZnSe thin films via Au nanosandwiching

Mn2+ ions incorporated into ZnS x Se1−x colloidal quantum dots: controlling size and composition of nanoalloys and regulating magnetic dipolar interactions

Enhanced optical properties of ZnSexS1-x and Mn-doped ZnSexS1-x QDs via non-toxic synthetic approach

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Mn²⁺ ions incorporated into ZnS _x Se_1−x colloidal quantum dots: controlling size and composition of nanoalloys and regulating magnetic dipolar interactions