Preparation and upconversion properties of rare earth doped core-shell Y(OH)3 and β-NaYF4 hybrid nanorods
- Key Lab of In-fiber Integrated Optics, Ministry Education of China, Harbin Engineering University, Harbin 150001 (China)
Highlights: • Er{sup 3+}/Yb{sup 3+}-doped Y(OH)3@β-NaYF4@β-NaYF4 hybrid nanorods swere synthesized. • Upconversion intensity increases dramatically by ion exchange reaction, and it can be further enhanced through coating inert shells. • Formation mechanisms of the core-shell nanorods are discussed, as well as their upconversion properties. - Abstract: Er{sup 3+}/Yb{sup 3+}-doped Y(OH){sub 3}@β-NaYF{sub 4} core-shell nanorods are synthesized through in situ ion exchange reaction using Y(OH){sub 3} nanorods as templates. Further, inert shells of β-NaYF{sub 4} without activated dopants are coated by a facile hydrothermal method. Upconversion intensity increases dramatically by ion exchange reaction, and it can be further enhanced through coating inert shells. The maximal enhanced factor of inert coating reaches 6.58. On the basis of the structural tests and spectral data, formation mechanisms of the core-shell nanorods are discussed, as well as their upconversion properties.
- OSTI ID:
- 22803958
- Journal Information:
- Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 101; ISSN MRBUAC; ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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