Oxygen in single crystalline antimony triselenide (Sb₂Se₃) is addressed by infrared (IR) absorption spectroscopy. Measurements conducted on Sb₂Se₃ samples doped—during growth, post-growth annealing in the O₂ ambient, or by O ion implantation—with ¹⁶O reveal an IR absorption line at 527 cm⁻¹ (10 K). Substitution of ¹⁶O by ¹⁸O “red”-shifts the signal down to 500 cm⁻¹ 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⁻¹ line and concurrent appearance of the signals due to hydroxyl groups, suggesting formation of oxygen-hydrogen complexes. The configuration of the 527-cm⁻¹ oxygen center is discussed.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:90873 |
| Date | 16 May 2024 |
| Creators | Herklotz, F., Lavrov, E. V., Hobson, T. D. C., Major, J. D., Durose, K. |
| Publisher | American Institute of Physics |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 1077-3118, 212101, 10.1063/5.0095547 |
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