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Influence of Gd3+ doping concentration on the properties of Na(Y,Gd)F-4
- We present a systematic study on the properties of Na(Y,Gd)F-4-based upconverting nanoparticles (UCNP) doped with 18% Yb3+, 2% Tm3+, and the influence of Gd3+ (10-50 mol% Gd3+). UCNP were synthesized via the solvothermal method and had a range of diameters within 13 and 50 nm. Structural and photophysical changes were monitored for the UCNP samples after a 24-month incubation period in dry phase and further redispersion. Structural characterization was performed by means of X-ray diffraction (XRD), transmission electron microscopy (TEM) as well as dynamic light scattering (DLS), and the upconversion luminescence (UCL) studies were executed at various temperatures (from 4 to 295 K) using time-resolved and steady-state spectroscopy. An increase in the hexagonal lattice phase with the increase of Gd3+ content was found, although the cubic phase was prevalent in most samples. The Tm3+-luminescence intensity as well as the Tm3+-luminescence decay times peaked at the Gd3+ concentration of 30 mol%. Although the general upconvertingWe present a systematic study on the properties of Na(Y,Gd)F-4-based upconverting nanoparticles (UCNP) doped with 18% Yb3+, 2% Tm3+, and the influence of Gd3+ (10-50 mol% Gd3+). UCNP were synthesized via the solvothermal method and had a range of diameters within 13 and 50 nm. Structural and photophysical changes were monitored for the UCNP samples after a 24-month incubation period in dry phase and further redispersion. Structural characterization was performed by means of X-ray diffraction (XRD), transmission electron microscopy (TEM) as well as dynamic light scattering (DLS), and the upconversion luminescence (UCL) studies were executed at various temperatures (from 4 to 295 K) using time-resolved and steady-state spectroscopy. An increase in the hexagonal lattice phase with the increase of Gd3+ content was found, although the cubic phase was prevalent in most samples. The Tm3+-luminescence intensity as well as the Tm3+-luminescence decay times peaked at the Gd3+ concentration of 30 mol%. Although the general upconverting luminescence properties of the nanoparticles were preserved, the 24-month incubation period lead to irreversible agglomeration of the UCNP and changes in luminescence band ratios and lifetimes.…
Author details: | Anna López de Guereñu KurganovaORCiDGND, Dennis Tobias KlierGND, Toni HaubitzORCiDGND, Michael Uwe KumkeORCiDGND |
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DOI: | https://doi.org/10.1007/s43630-021-00161-4 |
ISSN: | 1474-905X |
ISSN: | 1474-9092 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/35001348 |
Title of parent work (English): | Photochemical & photobiological sciences / European Society for Photobiology |
Subtitle (English): | Yb3+, Tm3+ upconverting nanoparticles and their long-term aging behavior |
Publisher: | Springer |
Place of publishing: | Heidelberg |
Publication type: | Article |
Language: | English |
Date of first publication: | 2022/01/09 |
Publication year: | 2022 |
Release date: | 2023/04/13 |
Tag: | Lanthanides; Near infra-red; Time-resolved spectroscopy; Ultra-low; Upconversion luminescence; temperature |
Volume: | 21 |
Issue: | 2 |
Number of pages: | 11 |
First page: | 235 |
Last Page: | 245 |
Funding institution: | Projekt DEAL; German Research Foundation (DFG) School of Analytical; Sciences Adlershof (SALSA) [8711110399]; Federal Institute for Materials; Research and Testing (BAM) |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie | |
DDC classification: | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten | |
Peer review: | Referiert |
Publishing method: | Open Access / Hybrid Open-Access |
License (German): | CC-BY - Namensnennung 4.0 International |