Identifying Raman modes of Sb2Se3 and their symmetries using angle-resolved polarised Raman spectra

Nicole Fleck; Theodore D. C. Hobson; Christopher N. Savory; John Buckeridge; Tim D. Veal; Maria R. Correia; David O. Scanlon; Ken Durose; Frank Jäckel

doi:10.1039/D0TA01783C

Identifying Raman modes of Sb₂Se₃ and their symmetries using angle-resolved polarised Raman spectra†

Nicole Fleck,

‡^a Theodore D. C. Hobson,

‡^a Christopher N. Savory,

^b John Buckeridge,

^c Tim D. Veal,

^a Maria R. Correia,^d David O. Scanlon,

^be Ken Durose^a and Frank Jäckel

*^a

Author affiliations

* Corresponding authors

^a Stephenson Institute for Renewable Energy and Department of Physics, University of Liverpool, Peach Street, Liverpool L69 7ZF, UK
E-mail: fjaeckel@liverpool.ac.uk

^b University College London, Department of Chemistry and Thomas Young Centre, 20 Gordon Street, London WC1H 0AJ, UK

^c School of Engineering, London South Bank University, London SE1 0AA, UK

^d Departamento de Física and i3N, Universidade de Aveiro, 3810-193 Aveiro, Portugal

^e Diamond Light Source Ltd., Diamond House, Harwell Science and Innovation Campus, Didcot, UK

Abstract

The physical properties of antimony selenide (Sb₂Se₃) are highly anisotropic. Angle-resolved polarised Raman spectroscopy was employed to characterise oriented crystals and used in conjunction with group theory structural analysis to assign vibrational symmetries to the peaks observed in the Raman spectra. The phonon energies were corroborated via density functional theory (DFT) calculations. Furthermore, a straightforward method is proposed to verify the desirable (001) plane orientation of film growth for device applications via minimisation of the 155 cm⁻¹ peak in the Raman spectrum.

This article is part of the themed collection: Journal of Materials Chemistry A HOT Papers

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Article information

DOI: https://doi.org/10.1039/D0TA01783C
Article type: Paper
Submitted: 14 Feb 2020
Accepted: 08 Apr 2020
First published: 15 Apr 2020
This article is Open Access

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J. Mater. Chem. A, 2020,8, 8337-8344

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Identifying Raman modes of Sb₂Se₃ and their symmetries using angle-resolved polarised Raman spectra

N. Fleck, T. D. C. Hobson, C. N. Savory, J. Buckeridge, T. D. Veal, M. R. Correia, D. O. Scanlon, K. Durose and F. Jäckel, J. Mater. Chem. A, 2020, 8, 8337 DOI: 10.1039/D0TA01783C

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Journal of Materials Chemistry A