The High-pressure Studies Of Y₂O₃:Eu³⁺、YBO₃:Eu³⁺ Nano-luminescence Materials

Rare-earth doped fluorescent materials have excellent optical properties,and these functional materials can have more excellent properties on the order of nanometer size and are different from the physical and chemical properties of bulk materials.In the microcosmic world,changing the regular arrangement of atoms and the state of electron orbits may lead to changes in the nature of matter.Pressure,as an independent thermodynamic parameter,can change the microscopic state of matter by exerting pressure,thus affecting macroscopic properties in all aspects.Substances can exhibit many phase transformations under high pressure,and they can also be processed and synthesized.This article mainly studies the structure and luminescent properties of nano fluorescent materials under high pressure.High-pressure experiments use high pressure to produce high-pressure limit conditions for the top anvil device.Two kinds of luminescent nanomaterials,Y₂O₃:Eu³⁺and YBO₃:Eu³⁺,were studied.Characterization of the microscopic changes of the material is achieved under concentrated test methods of high-voltage synchrotron radiation X-ray diffraction,high-pressure Raman spectroscopy,and high-pressure fluorescence spectroscopy.This paper focuses on the following changes in the phase change of high-pressure materials:Y₂O₃:Eu³⁺two-dimensional nanomaterials were prepared by hydrothermal method.The product was first characterized by XRD,and the nano-morphology of the sample was observed by electron microscopy to determine its crystallinity and crystal structure.Several relevant high-pressure experiments were performed separately and the resulting data were analyzed.Based on the experimental results,the pressure-dependent d value and phase change pressure were measured.By fitting the V-P value,the calculation of the bulk modulus and the cell volume was completed.Through X-ray diffraction,Raman scattering and luminescence spectra studies,it was found that the Y₂O₃:Eu³⁺material became amorphous at 15.9 GPa.In addition,comparing the bulk modulus of Y₂O₃:Eu³⁺nanomaterials with those of other high pressure studies,it is discussed that nanomaterials have different body elastic moduli and phase transitions and discuss the causes of the differences compared with bulk materials.Analyze the change under high pressure.Hydrothermal Synthesis of YBO₃:Eu³⁺Rare Earth Ions in Two Dimensional Nanomaterials.XRD tests were performed on the output to determine its composition and a series of electron microscopy-related characterization tests were performed.According to the high-pressure X-ray diffraction experimental results,pressure-dependent d value and phase change pressure were measured.the body elastic modulus and the size of the unit cell volume were calculated.Phase transition pressures and phase transition paths are determined by X-ray diffraction and fluorescence spectroscopy.Through the above experiments,the phase transition mechanism of YBO₃:Eu³⁺was analyzed.It was found that YBO₃:Eu³⁺began to change to amorphous at 18.8 GPa under high pressure.