Solvent-Free Mechanochemical Synthesis and Characterization of Nickel Tellurides with Various Stoichiometries: NiTe, NiTe2 and Ni2Te3

Kristl, Matjaž; Gyergyek, Sašo; Škapin, Srečo D.; Kristl, Janja

doi:10.3390/nano11081959

Cited by 9 publications

(3 citation statements)

References 55 publications

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“…It arises when the particle size is very small and comparable to Bohr's radius. The E g of nickel telluride, which was found to be 4.5 eV indicates the synthesized materials are the nanophase, and this may be a stronger quantum confinement effect in the nanomaterials 38 . The evaluated bandgap ( E g ) values of all the composite samples are observed in the range of 1.8–2.2 eV.…”

Section: Resultsmentioning

confidence: 91%

“…The E g of nickel telluride, which was found to be 4.5 eV indicates the synthesized materials are the nanophase, and this may be a stronger quantum confinement effect in the nanomaterials. 38 The evaluated bandgap (E g ) values of all the composite samples are observed in the range of 1.8-2.2 eV. The individual E g values of CuNiTe-1, CuNiTe-2, CuNiTe-3, and CuNiTe-4 are manifested in Table 3.…”

Section: Optical Analysismentioning

confidence: 93%

“…The exothermic peaks are found at 449.6 and 464.6 • C corresponding to the melting point of tellurium (449.5 • C). 38 The corresponding enthalpy is found to be −5.83 J/g.…”

Section: Thermal Analysis By Dscmentioning

confidence: 99%

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One‐pot hydrothermal synthesis of Cu2Te/NiTe nanocomposite materials: A structural, morphological, and optical study

et al. 2023

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Due to various structural and optical properties, metal chalcogenide nanomaterials are favorable candidates for different optoelectronic applications. In the current report, Cu 2 Te/NiTe nanocomposites were synthesized via the facile hydrothermal method. With the variation of concentration of Cu and Ni, various materials had been prepared along with pure Cu 2 Te and NiTe. The observed several vibrational modes in the material through the Raman spectroscopy are well agreed with the appearing phases. The morphological study confirmed the nanostructures are combination of nanoparticles with sheets. The size of nanoparticles varied in the range of 66-34 nm. The absorbance spectra of the nanocomposite exhibit a blueshift and support the enhancement in the optical bandgap. The value of bandgap energy of the composite samples has been noted in the range of 1.8-2.2 eV. This bandgap range enables the material for various optoelectronic applications such as solar cell and other photovoltaic devices. Thermal analysis of the material demonstrates the presences of several endothermic and exothermic peaks. Thus, several studies on the material prevail its various applicability as optoelectronics as well as other thermal application.

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Section: Resultsmentioning

confidence: 91%

Section: Optical Analysismentioning

confidence: 93%

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One‐pot hydrothermal synthesis of Cu2Te/NiTe nanocomposite materials: A structural, morphological, and optical study

et al. 2023

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Modified Electronic Structure of Amorphous Mn–Si–Te for Ovonic Threshold Switch Application: Improved Thermal Stability by the Formation of Mn–Te Bonding

Saito,

Hatayama,

Saito

2024

Physica Rapid Research Ltrs

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A critical element within the 3D Xpoint architecture is the Ovonic threshold switch (OTS) material, which serves a crucial role as a selector. The development of novel OTS materials devoid of hazardous elements such as As and Se is imperative for mitigating environmental impact. The Si‐Te binary telluride is a representative As/Se‐free OTS material, demonstrating stable switching. However, its thermal stability is insufficient for enduring annealing processes in semiconductor manufacturing. To address this challenge, this study proposes the incorporation of Mn into the Si‐Te alloy. While the introduction of transition metals into chalcogenide glass typically reduces the electrical resistivity, potentially compromising the ON/OFF ratio, the off current for the device containing 26 at.% Mn is observed to be lower than that for the undoped Si‐Te device. Furthermore, the thermal stability of the Mn‐Si‐Te film surpasses that of its pristine counterpart. X‐ray photoelectron spectroscopy and density functional theory simulations provide evidence of Mn‐Te bonding formation in the Mn‐Si‐Te amorphous alloy, thus suggesting the role of Mn‐Te bonding in enhancing thermal stability. These findings provide a promising avenue for the advancement of novel OTS materials.This article is protected by copyright. All rights reserved.

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One-Step Solid-State Mechanochemical Synthesis of Metal Chalcogenides as a Perspecitve Alternative to Traditional Preparation Routes

Baláž

Stahorský²,

Baláž³

et al. 2023

Chemically Deposited Metal Chalcogenide-Based Carbon Composites for Versatile Applications

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Solvent-Free Mechanochemical Synthesis and Characterization of Nickel Tellurides with Various Stoichiometries: NiTe, NiTe2 and Ni2Te3

Cited by 9 publications

References 55 publications

One‐pot hydrothermal synthesis of Cu2Te/NiTe nanocomposite materials: A structural, morphological, and optical study

One‐pot hydrothermal synthesis of Cu2Te/NiTe nanocomposite materials: A structural, morphological, and optical study

Modified Electronic Structure of Amorphous Mn–Si–Te for Ovonic Threshold Switch Application: Improved Thermal Stability by the Formation of Mn–Te Bonding

One-Step Solid-State Mechanochemical Synthesis of Metal Chalcogenides as a Perspecitve Alternative to Traditional Preparation Routes

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