CRIS of TUM
Current Research Information System (CRIS) of the Technical University of Moldova (TUM) is an open access system gathering information and digital material relating to the various research and innovation entities and activities of TUM: researchers, research units, publications, patents, thesis, awards, events, equipment, services and other.
Please use this identifier to cite or link to this item:
http://cris.utm.md/handle/5014/370| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | MAŞNIC, Alisa | en_US |
| dc.date.accessioned | 2020-04-12T14:23:42Z | - |
| dc.date.available | 2020-04-12T14:23:42Z | - |
| dc.date.issued | 2020-03-15 | - |
| dc.identifier.citation | Maşnic, Alisa. (2020). BIREFRINGENCE AND EXCITON SPECTRA OF CuAlSe2 AND CuAlS2 CRYSTALS. Journal of Engineering Science, XXVII (1), 23–27. http://doi.org/10.5281/zenodo.3713358 | en_US |
| dc.identifier.issn | 2587-3474 | - |
| dc.identifier.issn | 2587-3482 | - |
| dc.identifier.uri | http://cris.utm.md/handle/5014/370 | - |
| dc.description.abstract | The excitonic reflection spectra of CuAlS2 and CuAlSe2 crystals were measured at the temperature of 10 K for polarizations E||c and E⊥c. Ground and excited states of the excitons were found out in the investigated spectra. Symmetries of the observed excitons were determined. The shapes of ground states lines of Г4 and Г5 excitons were calculated by means of the Kramers-Kronig relations. Exciton parameters and values of energetic gaps (Г7-Г6, Г6-Г6, and Г7-Г6) were determined. Optical reflection spectra in the depth of absorption band (Еg - 6 eV) were measured at 80 K for E||c and E⊥c polarizations. Optical constants were calculated from measured reflection spectra by Kramers-Kronig analysis. The phase in the excitonic region was determined. Transmission spectra of CuAlSe2 single crystals deposit in crossed polarizers demonstrate a birefractive effect. In the case of parallel polarizers interference due to birefraction was observed. The isotropic point was determined. | en_US |
| dc.language.iso | en | en_US |
| dc.relation.ispartof | Journal of Engineering Science | en_US |
| dc.subject | absorption and reflection spectra | en_US |
| dc.subject | excitons | en_US |
| dc.subject | polaritons | en_US |
| dc.subject | birefringence | en_US |
| dc.title | Birefringence and exciton spectra of CuAlSe2 and CuAlS2 crystals | en_US |
| dc.type | Article | en_US |
| dc.identifier.doi | 10.5281/zenodo.3713358 | - |
| item.languageiso639-1 | other | - |
| item.grantfulltext | open | - |
| item.fulltext | With Fulltext | - |
| crisitem.author.dept | Department of Telecommunications and Electronic Systems | - |
| crisitem.author.parentorg | Faculty of Electronics and Telecommunications | - |
| Appears in Collections: | Journal Articles | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| JES-2020-1_23-27.pdf | 693.09 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.