Preparation of PbF2:Ho3+, Er3+, Yb3+ phosphors and its multi-wavelength sensitive upconversion luminescence mechanism
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, Jilin, 130022 (China)
Highlights: • In this paper, PbF{sub 2}: Ho{sup 3+}, Er{sup 3+}, Yb{sup 3+} phosphors are prepared by a high-temperature solid-state method for the first time. • The crystal structure of the as-prepared phosphors is refined. • The upconversion luminescence properties and mechanism of the as-prepared phosphors are analyzed under excitation of 1064 nm, 1550 nm for the first time. - Abstract: In this paper, PbF{sub 2}: Ho{sup 3+}, Er{sup 3+}, Yb{sup 3+} phosphors are prepared by a high-temperature solid-state method. The crystal structure acquired by X ray powder diffractometer shows that the resultant phosphor is a pure cubic PbF{sub 2} crystal. The upconversion (UC) emission spectra of samples are performed by a fluorescence spectrophotometer coupled with lasers of 980 nm, 1064 nm and 1550 nm, presenting the green emission in the range of 541∼548 nm and red emission in the range of 653–667 nm, corresponding to the excitation path: Ho{sup 3+}: {sup 4}F{sub 9/2}→{sup 4}I{sub 15/2}, Er{sup 3+}: {sup 4}S{sub 3/2}→{sup 4}I{sub 15/2}, Er{sup 3+}: {sup 4}F{sub 9/2}→{sup 4}I{sub 15/2} and Ho{sup 3+}: {sup 5}F{sub 5}→{sup 5}I{sub 8}. Finally, the UC luminescence mechanism is analyzed under excitation of different wavelengths. The result shows that the phosphors have a promising prospect for application in anti-counterfeiting technologies and solar cell field.
- OSTI ID:
- 22805315
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 107; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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