Abstract
Two-dimensional (2D) materials have been intensively studied due to their outstanding chemical, physical, electronic and optical properties potentially offering a breakthrough in the search of a direct integration of these materials with the silicon (Si) technology. Among them, platinum diselenide (PtSe2) is of significant interest for applications in electronics, spintronics, sensors, catalysis, etc. In this paper, we report a large-scale synthesis of PtSe2-layers by thermally-assisted selenization of pre-deposited platinum films in a horizontal quartz-tube chemical vapor deposition (CVD) reactor. The overall structural information and quality of the PtSe2-films is analyzed by Raman spectroscopy and Raman active modes identification. The electrical characterization via V-I characteristics reveals sheet resistance values in the range of ~103 Ω.
Highlights
Novel materials in a 2D structural configuration have been intensively explored due to their diverse chemical, physical, electronic and optical properties that may lead to a breakthrough in botn fundamental and applied science [1]
One of the widely investigated materials, platinum diselenide PtSe2 [2], the parent compound in the noble transition metal dichalcogenides (TMDs) family, provides promising prospects for applications in opto-electronics, spintronics, sensorics and catalysis
PtSe2 and noble TMDs exhibit various physical properties: sophisticated electronic structure with a notable indirect band gap controlled by the layer thickness [3], defects [4], applied strain [5]
Summary
Novel materials in a 2D structural configuration have been intensively explored due to their diverse chemical, physical, electronic and optical properties that may lead to a breakthrough in botn fundamental and applied science [1]. PtSe2 and noble TMDs exhibit various physical properties: sophisticated electronic structure with a notable indirect band gap controlled by the layer thickness [3], defects [4], applied strain [5]. One of the advantages of PtSe2 is its relatively high environmental stability (a main weakness of almost all TMDs in a 2D form) and especially its conformity with the requirements of various synthesis approaches: thermally-assisted conversion (TAC, sеlenization of a pre-deposited Pt layer on a substrate) [2], chemical vapor deposition [6,7], molecular beam epitaxy [8], among others.
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