Hydrothermal Synthesis of Rare-Earth Doped NH₄Y₃F₁₀ Sub-Microcrystals with Down-Converting Luminescence

Abstract:

A series of NH₄Y₃F₁₀ sub-microcrystals had been prepared by a one-step hydrothermal route. The morphological and structural properties of the sub-microcrystals were studied by scanning electron microscopy (SEM) and powder X-ray diffraction (XRD). The results of SEM and XRD suggested that NH₄Y₃F₁₀ sub-microcrystals have irregular shapes with their sizes varying from 100nm to 500nm and the structures of obtained NH₄Y₃F₁₀ sub-microcrystals are cubic phase. Additionally, the down-converting(DC) phenomenon have been observed under UV excitation in (Yb³⁺, Nd³⁺) co-doped NH₄Y₃F₁₀. It is found that luminescent efficiency of 10%Yb, 1%Nd co-doped NH₄Y₃F₁₀ sub-microcrystals is stronger than that of 10%Yb, 5%Nd co-doped NH₄Y₃F₁₀ sub-microcrystals. The energy transfer mechanism of the emission spectra of (Yb³⁺, Nd³⁺) co-doped NH₄Y₃F₁₀ is discussed.

• Periodical: Advanced Materials Research (Volumes 554-556)
• Pages: 485-488
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.554-556.485
• Online since: July 2012
• Authors: De Kang Xu, Sheng Hong Yang, Yue Li Zhang
• Keywords: Down-Converting, Hydrothermal Route, Sub-Microcrystals

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