Oxygen in antimony triselenide: An IR absorption study



Herklotz, F, Lavrov, EV, Hobson, TDC, Major, JD ORCID: 0000-0002-5554-1985 and Durose, K ORCID: 0000-0003-1183-3211
(2022) Oxygen in antimony triselenide: An IR absorption study. APPLIED PHYSICS LETTERS, 120 (21). p. 212101.

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Abstract

<jats:p> Oxygen in single crystalline antimony triselenide (Sb<jats:sub>2</jats:sub>Se<jats:sub>3</jats:sub>) is addressed by infrared (IR) absorption spectroscopy. Measurements conducted on Sb<jats:sub>2</jats:sub>Se<jats:sub>3</jats:sub> samples doped—during growth, post-growth annealing in the O<jats:sub>2</jats:sub> ambient, or by O ion implantation—with <jats:sup>16</jats:sup>O reveal an IR absorption line at 527 cm<jats:sup>−1</jats:sup> (10 K). Substitution of <jats:sup>16</jats:sup>O by <jats:sup>18</jats:sup>O “red”-shifts the signal down to 500 cm<jats:sup>−1</jats:sup> based on which the line is assigned to a local vibrational mode of an isolated oxygen defect. Annealing of O-enriched samples in hydrogen atmosphere at temperatures above 380 °C results in the suppression of the 527-cm<jats:sup>−1</jats:sup> line and concurrent appearance of the signals due to hydroxyl groups, suggesting formation of oxygen-hydrogen complexes. The configuration of the 527-cm<jats:sup>−1</jats:sup> oxygen center is discussed. </jats:p>

Item Type: Article
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 27 Jun 2022 09:30
Last Modified: 18 Jan 2023 20:56
DOI: 10.1063/5.0095547
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3157304