Rare earth neodymium borate near-infrared luminescent crystal material and preparation method thereof

Abstract

The invention discloses a rare earth neodymium borate near-infrared luminescent crystal material and a preparation method thereof, and the rare earth neodymium borate near-infrared luminescent crystal material is a rare earth metal borate compound Nd (B6O13H5). 2H2O, and is crystallized in a triclinic system and a P-1 space group. The preparation method comprises the following steps: adding boric acid, neodymium nitrate hexahydrate, rubidium chloride and deionized water into a polytetrafluoroethylene lining, uniformly mixing, and reacting at 260 DEG C for three days to obtain the rare earth neodymium borate near-infrared luminescent crystal material Nd (B6O13H5). 2H2O. The compound provided by the invention is synthesized by medium-temperature hydrothermal synthesis, the synthesis steps are simple, the obtained crystal has high quality, is not deliquesced in air and is insoluble in water, the specific structure can be obtained by single crystal diffraction test, the energy consumption in the synthesis process is low, and the adopted raw materials are easily available and low in price. The obtained rare earth borate compound has the near-infrared luminescence property of Nd.

Description

technical field [0001] The invention belongs to the technical field of crystal materials, in particular to a rare earth neodymium borate near-infrared luminescent crystal material and a preparation method thereof. Background technique [0002] The boron-oxygen clusters in rare-earth borates have abundant structural types, and rare-earth ions have f electrons, making rare-earth borate crystal materials a research hotspot in the fields of luminescence, laser, and nonlinear optics. In the crystal structure of borate, boron and oxygen have two coordination modes, forming BO 3 Triangular configuration and BO 4 Tetrahedral configuration, these two basic configurations can be connected to form a variety of boron-oxygen clusters, boron-oxygen clusters can be isolated, and can be connected to each other through hydrogen bonds, metal-oxygen bonds, etc. Chain-like, layered or three-dimensional skeleton structures can also be formed by sharing oxygen atoms, so the structures are rich ...

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Problems solved by technology

On the other hand, it is difficult to obtain rare earth borate crystals by hydrothermal synthesis at a relatively low temperature, because the solution environment of borate crystals obtained under hydrothermal conditions is alkaline, neutral or weakly acidic, Under such conditions, rare earth ions are easily hydrolyzed and become precipitated, and it is difficult to form rare earth borate crystals

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