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- Title
Comparative study of the phonon properties of square Tellurene and Selenene.
- Authors
Aziz, Mohammad Imran
- Abstract
In 2017, the successful production of two-dimensional (2D) square lattice structure of Tellurium and Selenium led to the discovery of novel group VI elemental 2D semi-Dirac materials. These materials possess fascinating properties, such as a thickness-dependent band gap, temperature stability, piezo-electric properties, non-linear effect, high charge mobility (electrons and holes), and solar energy conversion, that show great potential for various applications. Since electronic devices are typically used in domestic settings (at room temperature), transistors made of naturally stable Tellurene and Selenene materials are more practical and cost-effective than those made of other 2D materials. Tellurene and Selenene are characterized by their delicate nature, which makes them highly suitable for integration with current electronic devices on substrates, in contrast to other 2D materials. The Tellurene and Selenene structure possesses intriguing features that make it a prime candidate for studying its Tellurene and Selenene and understanding its properties based on its square lattice structure. The lattice dynamical properties of single-layer 2D square lattices are intriguing. Currently, we are using a PYTHON program to determine the phonon frequencies at Г points along high symmetry directions. First-order Raman spectra provide additional information about the materials' vibrational properties. The first-order spectra arise from the two-phonon processes and can provide information about the anharmonicity and coupling between different phonon modes. Additionally, we discuss the acoustical and optical contributions to the phonon frequencies. We anticipate that the phonon frequencies along the Г‒X of Tellurene and Selenene, 2D materials, will yield results that are reasonably similar to those obtained by other researchers.
- Subjects
PHONONS; PHONON-phonon interactions; CHARGE carrier mobility; SOLAR energy conversion; BAND gaps; RAMAN spectroscopy
- Publication
Applied Nanoscience, 2023, Vol 13, Issue 9, p6553
- ISSN
2190-5509
- Publication type
Article
- DOI
10.1007/s13204-023-02942-y