Journal ArticleDOI
Two-dimensional Janus PtSSe for photocatalytic water splitting under the visible or infrared light
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TLDR
Wang et al. as discussed by the authors proposed 2D Janus PtSSe with compelling photocatalytic properties, which were investigated by means of first-principles calculations.Abstract:
Recently, two-dimensional Janus materials have attracted increasing research interest due to their particular structure and great potential in electronics, optoelectronics and piezoelectronics. Here, we propose 2D Janus PtSSe with compelling photocatalytic properties which were investigated by means of first-principles calculations. 2D Janus PtSSe exhibits high thermal, dynamic and mechanical stability. Most remarkably, single-layer PtSSe exhibits an indirect band gap of 2.19 eV, high absorption coefficients in the visible light region, appropriate band edge positions and strong ability for carrier separation and transfer, thus rendering it a promising candidate for photocatalytic water splitting. Moreover, double-layer PtSSe compounds with different stacking configurations are extraordinary photocatalysts for water splitting even under infrared light, owing to their small band gaps as well as the built-in electrical field. Our results reveal 2D PtSSe with high experimental feasibility as a new platform for the overall water splitting reaction.read more
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Janus Monolayer Transition Metal Dichalcogenides
Jing Zhang,Shuai Jia,Kholmanov Iskandar,Liang Dong,Dequan Er,Weibing Chen,Hua Guo,Zehua Jin,Vivek B. Shenoy,Li Shi,Jun Lou +10 more
TL;DR: In this article, a novel crystal configuration of sandwiched S-Mo-Se structure (Janus SMoSe) at the monolayer limit has been synthesized and carefully characterized.
Journal ArticleDOI
Recent Progress on 2D Noble-Transition-Metal Dichalcogenides
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Recent advances in emerging Janus two-dimensional materials: from fundamental physics to device applications
TL;DR: The recent progress of emerging Janus 2D materials, including Janus graphene and van der Waals heterostructures, is presented in this article, where the investigations on the unique properties and potential device applications of Janus2D materials are summarized.
Journal ArticleDOI
Raman Characterization of Platinum Diselenide Thin Films
Maria O'Brien,Niall McEvoy,Carlo Motta,Jian Yao Zheng,Nina C. Berner,Jani Kotakoski,Kenan Elibol,Timothy J. Pennycook,Jannik C. Meyer,Chanyoung Yim,Mohamed Abid,Toby Hallam,John F. Donegan,Stefano Sanvito,Georg S. Duesberg +14 more
TL;DR: In this article, the A1g Raman active modes were identified using polarization measurements in the Raman setup and the peak positions of these modes were found to display a clear position and intensity dependence with film thickness, for multiple excitation wavelengths.
Journal ArticleDOI
Predicted Janus SnSSe monolayer: a comprehensive first-principles study
TL;DR: Calculated results show that SnSSe monolayer has a very high power factor, making it a promising candidate for thermoelectric applications, and it exhibits dynamic and mechanical stability.
References
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Journal ArticleDOI
High-Performance Hybrid Electronic Devices from Layered PtSe2 Films Grown at Low Temperature.
Chanyoung Yim,Kangho Lee,Niall McEvoy,Maria O'Brien,Sarah Riazimehr,Nina C. Berner,Conor P. Cullen,Jani Kotakoski,Jannik C. Meyer,Max C. Lemme,Georg S. Duesberg +10 more
TL;DR: This study reports the large-scale synthesis of thin films of platinum diselenide (PtSe2), a thus far scarcely investigated transition metal dichalcogenide, representing a breakthrough for the direct integration of this material with silicon (Si) technology.
Journal ArticleDOI
Facile Synthesis of Single Crystal PtSe2 Nanosheets for Nanoscale Electronics.
TL;DR: In this paper, a single crystal platinum diselenide (PtSe2 ) nanosheets are synthesized using H2 PtCl6 and Se as the precursors.
Journal ArticleDOI
Acoustic phonon limited mobility in two-dimensional semiconductors: Deformation potential and piezoelectric scattering in monolayer MoS 2 from first principles
TL;DR: In this paper, the authors theoretically study the acoustic phonon limited mobility in two-dimensional MoS for temperatures $Tl100$ K and high carrier densities using the Boltzmann equation and first-principles calculations of the acoustic electron-phonon (elph) interaction.
Journal ArticleDOI
Proposed photosynthesis method for producing hydrogen from dissociated water molecules using incident near-infrared light.
TL;DR: The electronic structure and optical property calculations on a surface-functionalized hexagonal boron-nitride bilayer confirm the existence of such photocatalysts and verify the reaction mechanism.
Journal ArticleDOI
Janus Structures of Transition Metal Dichalcogenides as the Heterojunction Photocatalysts for Water Splitting
TL;DR: In this article, the authors systematically investigated the photocatalytic activities of Janus molybdenum dichalcogenides (MoXY, X/Y = O, S, Se, and Te), by studying their band gaps, redox energy levels and electrons and holes separation.
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