Tantalum disulfide quantum dots: preparation, structure, and properties

Zhou, Liangliang; Sun, Chuli; Li, Xueming; Tang, Libin; Guo, Wei; Luo, Lin; Zhang, Meng; Teng, Kar Seng; Qian, Fuli; Lu, Chaoyu; Liang, Jing; Yao, Yugui; Lau, Shu Ping

doi:10.1186/s11671-020-3250-1

Cited by 21 publications

(6 citation statements)

References 49 publications

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“…[ 111 ] It exhibits an increase in bandgap from indirect to direct due to confinement effect in the electronic structure. [ 112 ]…”

Section: Methodsmentioning

confidence: 99%

“…[111] It exhibits an increase in bandgap from indirect to direct due to confinement effect in the electronic structure. [112] Figure 11 shows a collection of OM images of few-layer 1 T-TaS 2 flakes of different thicknesses deposited onto 90 nm SiO 2 /Si substrate. The bottom panel of Figure 11 shows the color charts correlating the thickness of 1T-TaS 2 flakes with their apparent color.…”

Section: Tasmentioning

confidence: 99%

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Apparent Colors of 2D Materials

Puebla

Zhang

et al. 2022

Advanced Photonics Research

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Finding 2D and thin‐film layered materials have become essential to develop not only in scientific‐related fields, but also in a wide industry, which is constantly feeding from this progress. For electronic devices, thin‐film materials are supposed to be a step forward to overcome Moore's law. In many other technologic areas, the development of tools based on flakes of materials has found new physics, becoming a rising field. Although, destructive techniques are commonly used to characterize the thickness of these materials. Herein, a list of materials is presented, whose thicknesses are characterized by their apparent colors in several substrates, a harmless, fast, and reliable technique that has been already used to determine the number of layers in several works. This list is also enlarged with other materials and substrates.

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“…[ 111 ] It exhibits an increase in bandgap from indirect to direct due to confinement effect in the electronic structure. [ 112 ]…”

Section: Methodsmentioning

confidence: 99%

Section: Tasmentioning

confidence: 99%

Apparent Colors of 2D Materials

Puebla

Zhang

et al. 2022

Advanced Photonics Research

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“…Several methods have been demonstrated to produce layered TaS 2, such as chemical vapor deposition (CVD) 27 , mechanical cleavages 21 , intercalation 28 , ultrasonication [29][30][31] , or liquid-phase exfoliation 22 . However, the CVD method remains to be improved before it can be used to produce large-domain homogeneous TaS 2 films.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of twist-angle stacked 2D TaS2

et al. 2021

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The low-cost, efficient photoelectrosensitive electrodes as an alternative to expensive and complex rigid systems are yet in demand for advanced photoresponsive technology. Here, the light-induced efficiency of electrochemically exfoliated TaS2 nanosheets for hydrogen generation catalysis and photodetectors was demonstrated. Mutual twisting of the exfoliated 2H-TaS2 flakes leads to the redistribution of charge density induced by interlayer interaction of the individual nanosheets. External light irradiation on the TaS2 surface influences its conductivity making the material feasible for photoelectrocatalysis and photodetection. The TaS2-based photoelectrocatalyst demonstrates high hydrogen evolution reaction (HER) activity with the onset overpotential below 575 mV vs. reversible hydrogen electrode (RHE). The TaS2-integrated photodetector in the acidic medium represents its broadband response with the highest photoresponsivity (0.62 mA W−1) toward 420 nm light illumination. This finding will pave the way to a new realization of exfoliated twist-angle stacked TaS2 for photo-induced electrochemistry and sensing.

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“…The structure and functions of TaS 2 have been widely examined as an example of a 2D metallic RMC. [ 212 ] Peng et al. found the effectiveness of TaS 2 monolayer on superconductivity, carrier density, and domain shape.…”

Section: The Properties Of Rmcsmentioning

confidence: 99%

“…[211] The structure and functions of TaS 2 have been widely examined as an example of a 2D metallic RMC. [212] Peng et al found the effectiveness of TaS 2 monolayer on superconductivity, carrier density, and domain shape. [213] Also, the bandgap of TaS 2 quantum dots increased with respect to NSs and was found to be 3.69 eV.…”

Section: Electrical and Optical Properties Of Rmcsmentioning

confidence: 99%

Refractory‐Metal‐Based Chalcogenides for Energy

Özel

Arkan

Coskun

et al. 2022

Adv Funct Materials

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When it is asked, “where can refractory metals be used?,” the possible shortest answer is, “where cannot they be used?” The uses of refractory‐metal‐based compounds in research and industry are too many to be enumerated; nevertheless, some outstanding examples are briefly mentioned here. Essentially, chalcogenide forms of refractory metals are preferred in the fabrication of high‐performance structures. Therefore, expanding the current studies that usually focus on tungsten‐ and molybdenum‐based structures to other materials may open new opportunities. Moreover, research on ternary and quaternary structures can also be a keystone in creating high‐performance products. The rationale of the present review is to give a brief overview of the recent history of refractory‐metal‐based chalcogenides (RMCs). Initially, the framework is confined to the general design and approaches for the synthesis of refractory metal chalcogenides. The assay is continued by extending with characteristic features of materials from crystalline properties to thermoelectric attributes and examining device fabrication processes. Taken together, the device fabrication part where RMCs are mainly used is extensively focused upon. Finally, outlook and future perspectives are given on the design and construction of RMCs to enable future inspiration and innovation.

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Tantalum disulfide quantum dots: preparation, structure, and properties

Cited by 21 publications

References 49 publications

Apparent Colors of 2D Materials

Apparent Colors of 2D Materials

Photocatalytic activity of twist-angle stacked 2D TaS2

Refractory‐Metal‐Based Chalcogenides for Energy

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