Vapor phase growth of two-dimensional PdSe2 nanosheets for high-photoresponsivity near-infrared photodetectors

Nano Research, Год журнала: 2020, Номер 13(8), С. 2091 - 2097

Опубликована: Май 30, 2020

Язык: Английский

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Pentagonal 2D Transition Metal Dichalcogenides: PdSe₂ and Beyond

Advanced Functional Materials, Год журнала: 2022, Номер 32(38)

Опубликована: Июль 5, 2022

Abstract 2D materials with common hexagonal crystal structures, such as graphene, boron nitride, and transition metal dichalcogenides have attracted great interest due to their novel physical chemical properties. Pentagonal (TMDs) exhibit distinct optical, electrical, properties, valuable functionalities for various applications. This review highlights some of the most important developments in this field, emphasis on neuromorphic computing, transistors, photodetection, catalysts, etc. Strategies modifying properties well device performance including defect engineering interface are presented. Finally, a forward‐looking outlook pentagonal is discussed.

Язык: Английский

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Van der Waals MoS₂/PdSe₂ Heterostructures Grown by Chemical Vapor Deposition for Broadband and Polarized Photodetection

Advanced Materials Interfaces, Год журнала: 2022, Номер 9(12)

Опубликована: Фев. 18, 2022

Abstract Recently, group‐X transition metal dichalcogenides with tunable distinct optical and superior electrical properties have displayed profound potential in various optoelectronic devices. In this work, novel van der Waals (vdWs) heterostructures composed of monolayer MoS 2 few‐layer PdSe grown by chemical vapor deposition are employed photodetectors for broadband polarized photodetection. Excitingly, measurements show that the /PdSe photodetector is sensitive to near‐infrared light responsivity as high 6.9 A W −1 , specific detectivity up 6.3 × 10 Jones, a rapid response speed 0.378/0.708 s at 830 nm. This mainly attributed enhanced absorption type‐II band alignment heterostructure. Under illumination, not only intralayer excitations but also interlayer contribute carrier's generation relevant layers, which enables photoresponse. addition, exhibits good polarization sensitivity dichroic ratio about 1.34. All these results demonstrate vdWs suitable realization next‐generation high‐performance broad photodetectors.

Язык: Английский

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2D Inorganic Bimolecular Crystals with Strong In‐Plane Anisotropy for Second‐Order Nonlinear Optics

Advanced Materials, Год журнала: 2020, Номер 32(32)

Опубликована: Июнь 26, 2020

Abstract 2D inorganic bimolecular crystals, consisting of two different molecules, are expected to possess novel physical and chemical properties due the synergistic effect individual components. However, crystals remain unexploited because difficulties in preparation arising from non‐typical layered structures intricate intermolecular interactions. Here, synthesis crystal SbI 3 ·3S 8 nanobelts via a facile vertical microspacing sublimation strategy is reported. The as‐synthesized exhibit strong in‐plane anisotropy phonon vibrations intramolecular as well show anisotropic light absorption with high dichroism ratio 3.9. Furthermore, it revealed that second harmonic generation intensity highly dependent on excitation wavelength crystallographic orientation. This work can inspire growth more excite potential applications for optoelectronic devices.

Язык: Английский

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Two-dimensional noble transition-metal dichalcogenides for nanophotonics and optoelectronics: Status and prospects

Nano Research, Год журнала: 2021, Номер 15(4), С. 3675 - 3694

Опубликована: Дек. 13, 2021

Язык: Английский

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