Outstanding pure green upconversion luminescence in LaZrTa <sub>3</sub> O <sub>11</sub> :Er <sup>3+</sup> /Yb <sup>3+</sup> phosphors prepared by molten salt synthesis with B <sub>2</sub> O <sub>3</sub> flux
Abstract Hexagonal Er 3+ /Yb 3+ co‐doped LaZrTa 3 O 11 (LZTO) phosphor was prepared by molten salt synthesis with B 2 O 3 flux. Holding temperature, holding time, solute and solvent ratio were regulated. The green upconversion luminescence (UCL) integral intensity of the optimal sample can reach 29.2% of β‐NaYF 4 :Er 3+ /Yb 3+ under 980 nm laser excitation. This outstanding pure green UCL is due to the low phonon energy, Er 3+ /Yb 3+ monolayer (2D) distribution, asymmetry of Er 3+ /Yb 3+ doped lattice sites, and low oxygen vacancy. The maximum relative temperature sensitivity attains 0.01221 K −1 at 303 K by employing luminescence intensity ratio (LIR) technique. LZTO:Er 3+ /Yb 3+ phosphor can be used in temperature sensing.
Authors
- Xuekai Wang (ORCID: https://orcid.org/0000-0002-8072-0467)
- Jinshu Zhang
- Guojian Li
- Yongze Cao (ORCID: https://orcid.org/0000-0001-7274-1551)
- Xiangping Li (ORCID: https://orcid.org/0000-0002-9388-4882)
- Baojiu Chen
- Xianglan Yan
Institutions
- Dalian Maritime University (CN)
- Northeastern University (CN)
Publication Details
- Journal
- Journal of the American Ceramic Society
- Published
- 2024-11-19
- DOI
- https://doi.org/10.1111/jace.20262
- Citations
- 5
- Primary Topic
- Luminescence Properties of Advanced Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.59
Funders
- National Natural Science Foundation of China
- Fundamental Research Funds for the Central Universities