4.6 Article

Terahertz Spectroscopy of Amorphous WSe2 and MoSe2 Thin Films

Journal

MATERIALS
Volume 11, Issue 9, Pages -

Publisher

MDPI
DOI: 10.3390/ma11091613

Keywords

THz time domain spectroscopy; transition metal dichalcogenides; dielectric function; absorption; refractive index

Funding

  1. Science Foundation Ireland (SFI) [12/RC/2278, 15/IA/3131]
  2. European Union Seventh Framework Program under Graphene Flagship [785219]

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Time domain spectroscopy is used to determine the THz electromagnetic response of amorphous transition metal dichalcogenides WSe2 and MoSe2 in thin-film form. The dielectric function is obtained using a rigorous transmission model to account for the large etalon effect. The Drude-Smith model is applied to retrieve the dielectric function, and from there, the sample conductivity.

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