Tripod-Like β-NaYF₄: Ln³⁺ (Ln = Yb, Er, Tm, Ho) Nanocrystals with Multicolor Upconversion Luminescence

Abstract:

Tripod-like β-NaYF₄: Ln³⁺ (Ln = Yb, Er, Tm, Ho) nanocrystals have been successfully synthesized for the first time by solvothermal method. The results revealed that the as-prepared NaYF₄: Ln³⁺ crystals with pure hexagonal phase consisted of tripod-like particles with 300-500 nm in length and 60-80 nm in diameter. The upconversion (UC) luminescence properties of β-NaYF₄: Ln³⁺ samples were investigated in detail. By changing the dopants species (Ln³⁺), multicolor (green and blue) UC emissions can be obtained in β-NaYF₄: Ln³⁺ under 980 nm laser diode (LD) excitation. In conclusion, the luminescent branched particles should be of wide potential application as building blocks in the future nanoscience and nanotechnology.

• Periodical: Advanced Materials Research (Volume 853)
• Pages: 243-248
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.853.243
• Online since: December 2013
• Authors: Ming Ye Ding, Chun Hua Lu*, Lin Hai Cao, Ya Ru Ni, Zhong Zi Xu
• Keywords: Crystal Growth, Crystal Structure, Phosphor, Upconversion

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