In-situ Raman analysis of hydrogenation in well-defined ultrathin molybdenum diselenide deposits synthesized through vapor phase deposition.

ABSTRACT: We report on the synthesis, characterization and in-situ Raman spectroscopy analysis of hydrogenation in ultrathin crystalline MoSe₂ deposits. We use a controllable vapor phase synthesis method using MoSe₂ powder as the only precursor, to fabricate nano- to micro-size few layer thick MoSe₂ deposits with tunable number densities on SiO₂/Si substrates. We employ this controllable synthesis method to correlate characteristic Raman spectroscopy response of MoSe₂ at ca. 242 cm^-1 (A_1g) and ca. 280 cm^-1 (E_2g¹) with the thickness of the deposits acquired from atomic force microscopy (AFM). We also use this array of well-defined atomically thin MoSe₂ deposits to study possible hy

SUBMITTER: Santiago PJ 

PROVIDER: S-EPMC7311385 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature