One-Pot Hydrothermal Synthesis of Thin Tellurene Nanosheet and Its Formation Mechanism

Gao, Mingzhong; Wang, Xinwei; Hong, Yuanze; Shi, Yongji; Wang, Dengkui; Fang, Dan; Fang, Xuan; Wei, Zhipeng

doi:10.1155/2019/5715291

Cited by 8 publications

(5 citation statements)

References 37 publications

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“…The fundamental information is helpful to develop tellurene-based transistors with optimal and reliable property. By a hydrothermal method, Feng et al synthesized the 2D Te nanosheets with the diameter of lateral dimension > 1 μm and the thickness about 40 nm [63] . By the one-pot hydrothermal reduction method, Wang et al effectively synthesized 2D thin tellurene which has the hexagonal structure [64] .…”

Section: Experimental Synthesismentioning

confidence: 99%

Tellurene: An elemental 2D monolayer material beyond its bulk phases without van der Waals layered structures

et al. 2020

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Due to the quantum confinement effect, atomically thin two-dimensional (2D) monolayer materials possess distinct characteristics from their corresponding bulk materials, which have received wide attention from science and industry. Among all the 2D materials, elemental 2D materials with the simplest components are most striking. As an emerging group-VIA elemental 2D monolayer material, tellurene exhibits many exciting fundamental properties, such as chemical and mechanical stabilities, bandgap and high carrier mobilities compared to phosphorene, graphene and MoS2, respectively. Besides, in further exploration, it was found that tellurene or tellurene-based device presents excellent thermoelectric properties, piezoelectric properties, quantum Hall effects, and superb optical properties especially nonlinear optics characteristics, etc. The properties of tellurene can be modulated by virtue of strain, defects, edges, and heterojunction effects. In view of so many unique properties, it has drawn significant interest since tellurene was predicted and fabricated successfully in 2017. In this paper, we review the 2D tellurene allotropes, experimental preparation, excellent properties, performance modulation and future development.

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Section: Experimental Synthesismentioning

confidence: 99%

Tellurene: An elemental 2D monolayer material beyond its bulk phases without van der Waals layered structures

et al. 2020

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“…The nanoplate was obtained on soft mica layers via the epitaxy method. So far, monolayer and few-layer Te nanoflakes can be fabricated by several strategies, such as physical vapor deposition (PVD), , liquid phase exfoliation, and hydrothermal synthesis. − …”

Section: Introductionmentioning

confidence: 99%

Anisotropic Properties of Tellurium Nanoflakes Probed by Polarized Raman and Transient Absorption Microscopy: Implications for Polarization-Sensitive Applications

Wang

Chen

Wen

et al. 2022

ACS Appl. Nano Mater.

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Recently, the two-dimensional (2D) elemental material tellurium (Te) has drawn considerable attention, since it possesses high transport properties, wide broadband absorption, excellent thermoelectric properties, and prominent air stability. However, the anisotropic properties and carrier dynamics of this material are less stated. Here, Te nanoflakes are prepared by the hydrothermal method. Highly anisotropic properties are illustrated by polarized Raman spectra and transient absorption spectroscopic measurements as well as density functional theory (DFT) calculations. Photocarrier dynamincs are probed by temporally resolved transient measurements with an exciton lifetime of 25 ps. These results imply that Te can be treated as a competitive material for further anisotropic devices and applications.

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“…Optical absorption spectra of synthesized Te-NWs was studied by UV-vis absorption spectroscopy. As displayed in figure 2(g), synthesized Te-NWs showed strong absorption in the range of 600-850 nm, which is due to transition from valance band (p-bonding) to conduction band (p-antibonding) [50,51].…”

Section: Resultsmentioning

confidence: 97%

Laser-assisted micropyramid patterned PDMS encapsulation of 1D tellurium nanowires on cellulose paper for highly sensitive strain sensor and its photodetection studies

et al. 2021

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This work demonstrates the fabrication of tellurium-nanowires (Te-NWs)/paper based device encapsulated using laser assisted mircopyramid patterned polydimethylsiloxane (PDMS) films. Although there are multiple reports published on 1D Te, most of them are limited to establishing its properties and studying its behavior as a sensor and research on the utilization of Te-NWs for physical sensors remain unexplored. Further, reports on p-type photodetectors also remain scarce. The fabricated Te-NWs/paper with micropyramid structured PDMS films encapsulation was used as a strain sensor, and it exhibited considerable improvement (∼60%) in sensitivity compared to smooth PDMS films. The gauge factor of the developed strain sensor was found to be∼15.3. In addition, fabricated Te-NWs/paper device with contacts was used as a photodetector and it showed photoresponsivity of∼22.5 mA W −1 and∼14.5 mA W −1 in visible and NIR regions, respectively. Furthermore, the device exhibited long-term mechanical stability under harsh deformations. Fabricated 1D Te-NWs/paper device was utilized as a strain sensor to monitor the angular movements in the human body and successfully monitored various human motions, including wrist bending, finger knuckle, elbow joint, and knee joint. The successful demonstration of Te-NWs based physical sensors and utilization in broadband photodetectors opens avenues of research for tellurium based flexible and wearable devices.

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One-Pot Hydrothermal Synthesis of Thin Tellurene Nanosheet and Its Formation Mechanism

Cited by 8 publications

References 37 publications

Tellurene: An elemental 2D monolayer material beyond its bulk phases without van der Waals layered structures

Tellurene: An elemental 2D monolayer material beyond its bulk phases without van der Waals layered structures

Anisotropic Properties of Tellurium Nanoflakes Probed by Polarized Raman and Transient Absorption Microscopy: Implications for Polarization-Sensitive Applications

Laser-assisted micropyramid patterned PDMS encapsulation of 1D tellurium nanowires on cellulose paper for highly sensitive strain sensor and its photodetection studies

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