dc.contributor.author | Trukhin, Anatoli | |
dc.contributor.author | Trinkler, Laima | |
dc.contributor.author | Chou, M.M.C. | |
dc.date.accessioned | 2020-08-19T17:02:52Z | |
dc.date.available | 2020-08-19T17:02:52Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 0868-8257 | |
dc.identifier.uri | https://dspace.lu.lv/dspace/handle/7/52401 | |
dc.description.abstract | We have studied luminescence of LiGaO 2 , Al 2 O 3 -Ga and Al 2 O 3 -Li crystals in order to reveal the nature of luminescence centres and mechanisms in these crystals. In Al 2 O 3 -Ga presence of Ga impurities determines occurrence of the 280 nm emission band, which demonstrates intra-centre character in photoluminescence and recombination character under X-ray irradiation. In Al 2 O 3 -Li crystal lithium induced luminescence is presented with the 326 nm band, which has a recombination character. Basing on spectral similarity of the main luminescence bands in pure LiGaO 2 crystal with the dopant-induced emission bands in Al 2 O 3 , and on peculiarities of the X-ray induced thermoluminescence, the adjustment of the previous luminescence interpretation is done. It is proposed that the donor-acceptor pairs with random separation distribution responsible for the 280 nm emission are represented with gallium Ga (plus an electron) and O (plus a hole) pairs, while the donor-acceptor pairs, producing the 330 nm emission band contain a lithium ion, presumably in the interstitial position Li i , and a neighbouring oxygen ion with a caught hole. | en_US |
dc.description.sponsorship | Latvian Council of Science Grant No. lzp-2018/1-0361; Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART² | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Sciendo | en_US |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/739508/EU/Centre of Advanced Material Research and Technology Transfer/CAMART² | en_US |
dc.relation.ispartofseries | Latvian Journal of Physics and Technical Sciences;55 (6) | |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | alumina | en_US |
dc.subject | donor-acceptor pairs | en_US |
dc.subject | exciton | en_US |
dc.subject | lithium metagallate | en_US |
dc.subject | luminescence | en_US |
dc.subject | Research Subject Categories::NATURAL SCIENCES:Physics | en_US |
dc.title | Comparison of Luminescence in LiGaO2, Al2 O3 -Ga and Al2 O3 -Li Crystals | en_US |
dc.type | info:eu-repo/semantics/article | en_US |
dc.identifier.doi | 10.2478/lpts-2018-0038 | |