Chemical synthesis of the high-pressure cubic-spinel phase of ZnIn2S4

Sriram, M. A.; McMichael, Paul H.; Waghray, A.; Kumta, Prashant N.; Misture, Scott T.; Wang, X.-L.

doi:10.1023/a:1004424629498

Cited by 52 publications

(37 citation statements)

References 24 publications

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“…For the cubic spinel structure, zinc and indium atoms are coordinated by four and six sulfur atoms, respectively. 35 In the hexagonal phase, zinc and sulfur atoms form tetrahedral coordination, while half of the indium atoms have tetrahedral coordination with sulfur atoms, and the other half have octahedral coordination. 25 For the rhombohedral phase, zinc and indium atoms occupy tetrahedral coordination sites in a mixed manner.…”

Section: Resultsmentioning

confidence: 99%

Ultrasensitive, Ultrafast, and Gate-Tunable Two-Dimensional Photodetectors in Ternary Rhombohedral ZnIn₂S₄ for Optical Neural Networks

Zhen

Zhou

Weng

et al. 2022

ACS Appl. Mater. Interfaces

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The demand for high-performance semiconductors in electronics and optoelectronics has prompted the expansion of low-dimensional materials research to ternary compounds. However, photodetectors based on 2D ternary materials usually suffer from large dark currents and slow response, which means increased power consumption and reduced performance.Here we report a systematic study of the optoelectronic properties of well-characterized rhombohedral ZnIn2S4 (R-ZIS) nanosheets which exhibit an extremely low dark current (7 pA at 5 2 V bias). The superior performance represented by a series of parameters surpasses most 2D counterparts. The ultrahigh specific detectivity (1.8 × 10 14 Jones), comparably short response time (τrise = 222 µs, τdecay = 158 µs) and compatibility with high-frequency operation (1000 Hz) are particularly prominent. Moreover, a gate-tunable characteristic is observed, which is attributed to photogating and improves the photoresponse by two orders of magnitude. Gating technique can effectively modulate the photocurrent-generation mechanism from photoconductive effect to dominant photogating. The combination of ultrahigh sensitivity, ultrafast response and high gate tunability makes the R-ZIS phototransistor an ideal device for low-energy-consumption and highfrequency optoelectronic applications, which is further demonstrated by its excellent performance in optical neural networks and promising potential in optical deep learning and computing.

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Section: Resultsmentioning

confidence: 99%

Ultrasensitive, Ultrafast, and Gate-Tunable Two-Dimensional Photodetectors in Ternary Rhombohedral ZnIn₂S₄ for Optical Neural Networks

Zhen

Zhou

Weng

et al. 2022

ACS Appl. Mater. Interfaces

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“…Generally, according to macroscopic symmetry, ZnIn 2 S 4 crystal structure can be divided into two distinctive types: hexagonal structure and cubic structure. [44,[46][47] In the crystal structure of cubic ZnIn 2 S 4 , Zn and In atoms are correspondingly tetrahe drally coordinated and octahedrally coordinated by S atoms, respectively (Figure 2a). Conversely, in the crystal layered struc ture of hexagonal ZnIn 2 S 4 , atoms are repeatedly stacked along the caxis in the sequence of SZnSInSInS.…”

Section: Crystal Structures and Band Structuresmentioning

confidence: 99%

ZnIn₂S₄‐Based Photocatalysts for Energy and Environmental Applications

et al. 2021

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Figure 4. a) Schematic depiction of the proposed growth mechanism for ZnIn 2 S 4 nanotubes and nanoribbons. b, c) Schematic illustration of the possible growth mechanism of ZnIn 2 S 4 microsphere and nanowires obtained in the presence of CTAB and PEG-6000, respectively. d) TEM micrographs at different magnifications of the ZnIn 2 S 4 nanotubes prepared by the solvothermal method at 180 °C. e) TEM images of the ZnIn 2 S 4 nanoribbons prepared from the solvothermal synthesis at 160 °C at low and higher magnification, respectively. f) TEM micrographs of the CTAB-assisted ZnIn 2 S 4 microspheres. g) TEM images of the PEG-6000 assisted ZnIn 2 S 4 samples after ultrasonic dispersion for 60 min. Reproduced with permission. [54]

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“…Shen et al [74] reported composite photocatalysts Cu-ZnIn 2 S 4 have higher visible light catalytic activity than pure ZnIn 2 S 4 (Figure 7). So far, the preparation methods of ZnIn 2 S 4 mainly are: chemical precipitation method [75], precursor route [76], hydrothermal method [77], microwave-hydrothermal method [78], solid phase method [79], the template [80], and so on. Among them, the hydrothermal method is the typical preparation method, which is more beneficial to controlling the different morphologies of ZnIn 2 S 4 .…”

Section: Double-metal Containing Indium Sulfidementioning

confidence: 99%

Indium-Containing Visible-Light-Driven (VLD) Photocatalysts for Solar Energy Conversion and Environment Remediation

Zhang¹,

Huang²,

Xu³

et al. 2016

Semiconductor Photocatalysis - Materials, Mechanisms and Applications

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Indium-containinμ visible-liμht-driven VLD photocatalysts includinμ indiumcontaininμ oxides, indium-containinμ sulλides, indium-containinμ hydroxides, and other cateμories have attracted more attention due to their hiμh catalytic activities λor oxidation and reduction ability under visible liμht irradiation. This chapter will thereλore concentrate on indium-containinμ nano-structured materials that demonstrate useλul activity under solar excitation in λields concerned with the elimination oλ pollutants, partial oxidation and the vaporization oλ chemical compounds, water splittinμ, and CO reduction processes. The indium-containinμ photocatalysts can extend the liμht absorption ranμe and improve the photocatalytic activity by dopinμ, heteroμeneous structures, load promoter, and morpholoμy reμulation. A number oλ synthetic and modiλication techniques λor adjustinμ the band structure to harvest visible liμht and improve the charμe separation in photocatalysis are discussed. In this chapter, preparation, properties, and potential applications oλ indium-containinμ nano-structured materials used as photocatalysis will be systematically summarized, which is beneλicial λor understandinμ the mechanism and developinμ the potential applications.

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Chemical synthesis of the high-pressure cubic-spinel phase of ZnIn2S4

Cited by 52 publications

References 24 publications

Ultrasensitive, Ultrafast, and Gate-Tunable Two-Dimensional Photodetectors in Ternary Rhombohedral ZnIn₂S₄ for Optical Neural Networks

Ultrasensitive, Ultrafast, and Gate-Tunable Two-Dimensional Photodetectors in Ternary Rhombohedral ZnIn₂S₄ for Optical Neural Networks

ZnIn₂S₄‐Based Photocatalysts for Energy and Environmental Applications

Indium-Containing Visible-Light-Driven (VLD) Photocatalysts for Solar Energy Conversion and Environment Remediation

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Chemical synthesis of the high-pressure cubic-spinel phase of ZnIn2S4

Cited by 52 publications

References 24 publications

Ultrasensitive, Ultrafast, and Gate-Tunable Two-Dimensional Photodetectors in Ternary Rhombohedral ZnIn2S4 for Optical Neural Networks

Ultrasensitive, Ultrafast, and Gate-Tunable Two-Dimensional Photodetectors in Ternary Rhombohedral ZnIn2S4 for Optical Neural Networks

ZnIn2S4‐Based Photocatalysts for Energy and Environmental Applications

Indium-Containing Visible-Light-Driven (VLD) Photocatalysts for Solar Energy Conversion and Environment Remediation

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Product

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Ultrasensitive, Ultrafast, and Gate-Tunable Two-Dimensional Photodetectors in Ternary Rhombohedral ZnIn₂S₄ for Optical Neural Networks

Ultrasensitive, Ultrafast, and Gate-Tunable Two-Dimensional Photodetectors in Ternary Rhombohedral ZnIn₂S₄ for Optical Neural Networks

ZnIn₂S₄‐Based Photocatalysts for Energy and Environmental Applications