Optical Characterization of Few-Layer PtSe₂ Nanosheet Films.

ABSTRACT: Thin films of transition-metal dichalcogenides are potential materials for optoelectronic applications. However, the application of these materials in practice requires knowledge of their fundamental optical properties. Many existing methods determine optical constants using predefined models. Here, a different approach was used. We determine the sheet conductance and absorption coefficient of few-layer PtSe₂ in the infrared and UV-vis ranges without recourse to any particular model for the optical constants. PtSe₂ samples with a thickness of about 3-4 layers were prepared by selenization of 0.5 nm thick platinum films on sapphire substrates at different temperatures. Differential reflectance was extracted from transmittance and reflectance measurements from the front

SUBMITTER: Pribusova Slusna L 

PROVIDER: S-EPMC8717396 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature