dc.contributor.author | Krieke, Guna | |
dc.contributor.author | Antuzevics, Andris | |
dc.contributor.author | Springis, Maris | |
dc.contributor.author | Rogulis, Uldis | |
dc.date.accessioned | 2021-01-15T13:11:58Z | |
dc.date.available | 2021-01-15T13:11:58Z | |
dc.date.issued | 2019 | |
dc.identifier.issn | 0925-8388 | |
dc.identifier.uri | https://www.sciencedirect.com/science/article/abs/pii/S0925838819319589 | |
dc.identifier.uri | https://dspace.lu.lv/dspace/handle/7/53354 | |
dc.description | The authors wish to express gratitude to K. Smits for TEM measurements.
This research is funded by the Latvian Council of Science, project “Novel transparent nanocomposite
oxyfluoride materials for optical applications”, project No. LZP-2018/1-0335. GK wishes to
expresses gratitude to Arnis Riekstins "MikroTik" donation. Donations are administered by the
University of Latvia Foundation.
© 2019. This work is licensed under a CC BY-NC-ND 4.0 license. | en_US |
dc.description.abstract | Transparent oxyfluoride glass ceramics containing hexagonal NaErF4 nanocrystals were synthesized by a heat treatment of a precursor glass obtained by the melt quenching technique. Combined X-ray diffraction (XRD) and transmission electron microscopy (TEM) analysis revealed the formation of single phase nanocrystals in the glass ceramics. The enhancement of intensity and spectral change of upconversion luminescence (UCL) confirmed the presence of Er3+ ions in the crystalline phase of the glass ceramics. Dominant energy transfer processes were identified using the rate equation formalism. Time-resolved site-selective spectroscopy studies at low temperatures were employed to elucidate the local structure of Er3+ ions in the glass ceramics and microcrystalline NaErF4. The origin of multi-site formation in hexagonal NaErF4 lattice is discussed.----/ / /---- This is the preprint of the following article: Guna Krieke; Andris Antuzevics, Maris Springis, Uldis Rogulis, Upconversion luminescence in transparent oxyfluoride glass ceramics containing hexagonal NaErF4, Journal of Alloys and Compounds Volume 798 (2019), which has been published at https://www.sciencedirect.com/science/article/abs/pii/S0925346717304731. This article may be used for non-commercial purposes in accordance with Elsevier Terms and Conditions for Sharing and Self-Archiving. © 2019. This work is licensed under a CC BY-NC-ND 4.0 license. | en_US |
dc.description.sponsorship | Latvian Council of Science LZP-2018/1-0335; University of Latvia Foundation; 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 | Elsevier | 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 | Journal of Alloys and Compounds;798 | |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Research Subject Categories::NATURAL SCIENCES:Physics | en_US |
dc.subject | Upconversion | en_US |
dc.subject | Oxyfluoride | en_US |
dc.subject | Site-selective spectroscopy | en_US |
dc.subject | Glass ceramics | en_US |
dc.subject | NaErF4 | en_US |
dc.title | Upconversion luminescence in transparent oxyfluoride glass ceramics containing hexagonal NaErF4 | en_US |
dc.type | info:eu-repo/semantics/preprint | en_US |
dc.identifier.doi | 10.1016/j.jallcom.2019.05.276 | |