Year: 2020
Type: article
Abstract: Considering that two-dimensional (2D) molybdenum trioxide has acquired more attention in the last few years, it is relevant to speed up thickness identification of this material. We provide two fast and non-destructive methods to evaluate the thickness of MoO3 flakes on SiO2/Si substrates. First, by means of quantitative analysis of the apparent color of the flakes in optical microscopy images, one can make a first approximation of the thickness with an uncertainty of ±3 nm. The second method is based on the fit of optical contrast spectra, acquired with micro-reflectance measurements, to a Fresnel law-based model that provides an accurate measurement of the flake thickness with ±2 nm of uncertainty.
Source: Nanomaterials
DOI: 10.3390/nano10071272
Authors: Sergio Puebla, Antonio Mariscal-Jiménez, Rosalía Serna Galán, Carmen Munuera, Andres Castellanos-Gomez
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,112
Funders: Ministerio de Ciencia, Innovación y Universidades, Graphene Flagship, European Commission, Ministerio de Ciencia e Innovación, Ministerio de Asuntos Económicos y Transformación Digital, Gobierno de España, Horizon 2020 Framework Programme, European Research Council, Agencia Estatal de Investigación
OpenAlex ID: W3037795697