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Monolayer PtSe 2 , a New Semiconducting Transition-Metal-Dichalcogenide, Epitaxially Grown by Direct Selenization of Pt
- Source :
- Nano Letters
- Publication Year :
- 2015
-
Abstract
- 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. Mor...
- Subjects :
- Materials science
Spintronics
Photoemission spectroscopy
Mechanical Engineering
chemistry.chemical_element
Bioengineering
Nanotechnology
02 engineering and technology
General Chemistry
Substrate (electronics)
Electronic structure
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Epitaxy
01 natural sciences
0104 chemical sciences
chemistry
Transition metal
Monolayer
General Materials Science
0210 nano-technology
Platinum
Subjects
Details
- ISSN :
- 15306984
- Database :
- OpenAIRE
- Journal :
- Nano Letters
- Accession number :
- edsair.doi.dedup.....503152e3741532852f26efd8ea77b1d7
- Full Text :
- https://doi.org/10.1021/acs.nanolett.5b00964