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Title: Monolayer PtSe 2 , a New Semiconducting Transition-Metal-Dichalcogenide, Epitaxially Grown by Direct Selenization of Pt

Journal Article · · Nano Letters
 [1];  [2];  [3];  [2];  [2];  [2];  [2];  [4];  [5];  [2];  [3];  [2];  [6];  [2];  [7];  [7];  [7];  [7];  [2];  [8] more »;  [2];  [9];  [10];  [1] « less
  1. Chinese Academy of Sciences (CAS), Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
  2. Chinese Academy of Sciences (CAS), Beijing (China)
  3. Tsinghua Univ., Beijing (China)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  5. Jeol Ltd., Tokyo (Japan)
  6. Chinese Academy of Sciences (CAS), Beijing (China); Vanderbilt Univ., Nashville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  7. Hiroshima Univ., Higashi-Hiroshima (Japan)
  8. Tsinghua Univ., Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
  9. National Univ. of Singapore (Singapore)
  10. Vanderbilt Univ., Nashville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Single-layer transition-metal dichalcogenides (TMDs) receive significant attention due to their intriguing physical properties for both fundamental research and potential applications in electronics, optoelectronics, spintronics, catalysis, and so on. Here, we demonstrate the epitaxial growth of high-quality single-crystal, monolayer platinum diselenide (PtSe2), a new member of the layered TMDs family, by a single step of direct selenization of a Pt(111) substrate. A combination of atomic-resolution experimental characterizations and first-principle theoretic calculations reveals the atomic structure of the monolayer PtSe2/Pt(111). Angle-resolved photoemission spectroscopy measurements confirm for the first time the semiconducting electronic structure of monolayer PtSe2 (in contrast to its semimetallic bulk counterpart). The photocatalytic activity of monolayer PtSe2 film is evaluated by a methylene-blue photodegradation experiment, demonstrating its practical application as a promising photocatalyst. Moreover, circular polarization calculations predict that monolayer PtSe2 has also potential applications in valleytronics.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Vanderbilt Univ., Nashville, TN (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Grant/Contract Number:
AC05-00OR22725; FG02-09ER46554; 2013CBA01600; 2011CB932700; 61222112; 61390501; 5132504; 11334006; 1731300500015; XDB07030100; ACI-1053575
OSTI ID:
1185929
Alternate ID(s):
OSTI ID: 1597683
Journal Information:
Nano Letters, Vol. 15, Issue 6; ISSN 1530-6984
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 506 works
Citation information provided by
Web of Science

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Extraordinarily Strong Interlayer Interaction in 2D Layered PtS 2 journal February 2016
Structural, electronic and phononic properties of PtSe 2 : from monolayer to bulk journal June 2018
Direct observation of spin-layer locking by local Rashba effect in monolayer semiconducting PtSe2 film journal January 2017
2DMatPedia, an open computational database of two-dimensional materials from top-down and bottom-up approaches journal June 2019
Optically Pumped Broadband Terahertz Modulator Based on Nanostructured PtSe 2 Thin Films journal January 2020
2D Crystals in Three Dimensions: Electronic Decoupling of Single-Layered Platelets in Colloidal Nanoparticles journal November 2018
Structural engineering of bilayer PtSe 2 thin films: a first-principles study journal August 2019
Temperature dependence of Raman responses of few-layer PtS 2 journal October 2018
Theoretical investigation of CO catalytic oxidation by a Fe–PtSe 2 monolayer journal January 2017
Experimental progress on layered topological semimetals journal April 2019
Unveiling the Layer‐Dependent Catalytic Activity of PtSe 2 Atomic Crystals for the Hydrogen Evolution Reaction journal April 2019
A new phase of the two-dimensional ReS 2 sheet with tunable magnetism journal January 2018
Tuning the electronic structures and transport coefficients of Janus PtSSe monolayer with biaxial strain journal October 2019
Low-Temperature Eutectic Synthesis of PtTe 2 with Weak Antilocalization and Controlled Layer Thinning journal July 2018
Quantum confinement-induced semimetal-to-semiconductor evolution in large-area ultra-thin PtSe2 films grown at 400 °C journal September 2019
Suppression of magnetoresistance in PtSe 2 microflakes with antidot arrays journal July 2018
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Simulation of Transition Metal Dichalcogenides book January 2019
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A low-temperature scanning probe microscopy system with molecular beam epitaxy and optical access journal November 2018
Two-Dimensional Transition Metal Dichalcogenides: An Overview book January 2019
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Phase-Engineered PtSe 2 -Layered Films by a Plasma-Assisted Selenization Process toward All PtSe 2 -Based Field Effect Transistor to Highly Sensitive, Flexible, and Wide-Spectrum Photoresponse Photodetectors journal April 2018
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Intrinsically patterned two-dimensional materials for selective adsorption of molecules and nanoclusters journal June 2017
Vertically standing PtSe 2 film: a saturable absorber for a passively mode-locked Nd:LuVO 4 laser journal January 2018
Visualization of point defects in ultrathin layered 1T-PtSe 2 journal September 2019
Controlled Doping of Wafer-Scale PtSe 2 Films for Device Application journal December 2018
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Fast, Self-Driven, Air-Stable, and Broadband Photodetector Based on Vertically Aligned PtSe 2 /GaAs Heterojunction journal February 2018
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High-Electron-Mobility and Air-Stable 2D Layered PtSe 2 FETs journal November 2016
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In-situ fabrication of PtSe2/GaN heterojunction for self-powered deep ultraviolet photodetector with ultrahigh current on/off ratio and detectivity journal September 2018
Tunable giant Rashba-type spin splitting in PtSe 2 /MoSe 2 heterostructure journal November 2019
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