Thermally induced correlation effects studied by Raman spectroscopy in PtSe<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> systems
In this paper, we report the analysis of the Raman spectroscopy results of PtSe<sub>2</sub> layers (ranging from 1 to 10 layers) deposited on an Al<sub>2</sub>O<sub>3</sub> substrate, compared to those of the sub-micron thin flake and bulk PtSe<sub>2</sub>. The positions of typical PtSe<sub>2</sub> Raman modes and the integral intensity ratios of the A<sub>1g</sub> and E<sub>1g</sub> bands are compared and discussed for all the systems considered in the temperature range from room temperature to 520 K. Moreover, the correlation plot of E<sub>1g</sub> and A<sub>1g</sub> is used to analyse the correlations of the dominant Raman modes in the PtSe<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> systems, in which the frequency position (<i>in-plane</i> to <i>out-of-plane</i>) ratio exhibits a well-defined linear dependence on temperature.
Authors
- Jacek Nowaczyk (ORCID: https://orcid.org/0000-0003-4521-8065)
- Ewelina Nowak (ORCID: https://orcid.org/0000-0003-0744-5486)
- Edyta Chłopocka
- Semir El-Ahmar (ORCID: https://orcid.org/0000-0003-4887-392X)
- W. Koczorowski (ORCID: https://orcid.org/0000-0002-9139-4513)
- Mirosław Szybowicz (ORCID: https://orcid.org/0000-0001-8933-571X)
- Jan Raczyński (ORCID: https://orcid.org/0000-0002-8448-9506)
Institutions
- Institute of Physics (PL)
- Poznań University of Technology (PL)
Publication Details
- Journal
- Nanoscale
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d4nr04062g
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Narodowe Centrum Nauki