Raman Characterization of Platinum Diselenide Thin Films

Abstract

Platinum diselenide (PtSe2) is a newly discovered 2D material which is of great interest for applications in electronics and catalysis. PtSe2 films were synthesized by thermally-assisted selenization of predeposited platinum films and scanning transmission electron microscopy revealed the crystal structure of these films to be 1T. Raman scattering of these films was studied as a function of film thickness, laser wavelength and laser polarization. Eg and A1g Raman active modes were identified using polarization measurements in the Raman setup. These modes were found to display a clear position and intensity dependence with film thickness, for multiple excitation wavelengths, and their peak positions agree with simulated phonon dispersion curves for PtSe2. These results highlight the practicality of using Raman spectroscopy as a prime characterization technique for newly-synthesized 2D materials.

Cited by in corpus (21)

• High-performance hybrid electronic devices from layered PtSe2 films grown at low temperature
• Experimental evidence of type-II Dirac fermions in PtSe2
• Highly sensitive electromechanical piezoresistive pressure sensors based on large-area layered PtSe${}_2$ films
• Nanoelectromechanical Sensors based on Suspended 2D Materials
• Excellent HER and OER Catalyzing Performance of Se-vacancies in Defects-engineering PtSe2: From Simulation to Experiment
• Band gap engineering of PtSe2
• Low-temperature synthesis and electrocatalytic application of large-area PtTe2 thin films
• Correlating Nanocrystalline Structure with Electronic Properties in 2D Platinum Diselenide
• Isotropic conduction and negative photoconduction in ultrathin PtSe${}_2$ films
• High carrier mobility epitaxially aligned PtSe2 films grown by one-zone selenization
• The optical absorption in indirect semiconductor to semimetal PtSe2 arises from direct transitions
• Raman spectroscopy of monolayer to bulk PtSe2 exfoliated crystals
• Metal-Organic Chemical Vapor Deposition of PtSe2
• Two dimensional crystals in three dimensions: electronic decoupling of single-layered platelets in colloidal nanoparticles
• Piezoresistive PtSe${}_2$ pressure sensors with reliable high sensitivity and their integration into CMOS ASIC substrates
• Multi-frequency Shubnikov-de Haas oscillations in topological semimetal Pt${}_2$HgSe${}_3$
• Helicity resolved Raman spectroscopy of mono- and a few-layers thick PtSe${}_2$
• Effect of the crystallographic c-axis orientation on the tribological properties of the few-layer PtSe2
• Precise Layer-Dependent Electronic Structure of MBE-Grown PtSe${}_2$
• PtSe2 grown directly on polymer foil for use as a robust piezoresistive sensor
• Synthesis and thermal stability of TMD thin films: A comprehensive XPS and Raman study