| Title: |
Impact of Er 3+ Concentration on Luminescence in NaLaF 4 |
| Authors: |
Grube, J.; Sarakovskis, A.; Doke, G.; Springis, M. |
| Source: |
Latvian Journal of Physics and Technical Sciences ; volume 51, issue 3, page 42-50 ; ISSN 0868-8257 |
| Publisher Information: |
Walter de Gruyter GmbH |
| Publication Year: |
2014 |
| Description: |
In this work, NaLaF 4 doped with Er 3+ of different concentrations was synthesized. The luminescence spectrum for NaLaF 4 :Er 3+ (0.2 mol%) at 489 nm excitation reveals characteristic Er 3+ luminescence bands in the green (540 nm), red (660 nm) and infrared (980 nm) spectral regions. The green luminescence band originated from the 4 S 3/2 → 4 I 15/2 transition is the most intensive one in the luminescence spectrum. As the concentration of the activator is increasing, the intensity of all luminescence bands changes significantly. The super-linear increase of the infrared luminescence intensity with increasing Er 3+ concentration as well as the quenching of green luminescence at the concentrations exceeding 2 mol% can be attributed to the cross-relaxation process between the activator ions. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.2478/lpts-2014-0018 |
| Availability: |
https://doi.org/10.2478/lpts-2014-0018; http://content.sciendo.com/view/journals/lpts/51/3/article-p42.xml; https://www.sciendo.com/pdf/10.2478/lpts-2014-0018 |
| Rights: |
http://creativecommons.org/licenses/by-nc-nd/3.0/ |
| Accession Number: |
edsbas.90B2B8C8 |
| Database: |
BASE |