Study On Inorganic/Organic Light Amplification Hybrid Nano-Materials

Nanoparticles of BaLiF₃:Er³⁺, NaYF₄:Er³⁺, BaYF₅:Er³⁺ , BaF₃: Yb³⁺,Er³⁺ and LaF₃: Yb³⁺,Er³⁺were prepared in the quaternary microemulsions of CTAB, n-butanol, n-octance and water. The X-ray diffraction (XRD) patterns were indexed to a pure YF₃ and BaF₂ phase. The diameter of the particles, calculated with the help of Debye-Scherrer equation, revealed that these particles were nanoparticles. The fluorescence emission band of nanoparticles peaked at about 1540 nm (⁴I_13/2→⁴I_15/2).At room temperature,by using 980nm laser to excited BaF₃: Yb³⁺,Er³⁺ and LaF₃: Yb³⁺,Er³⁺, the red and green light can be observed.BaLiF₃:Er³⁺, NaYF₄:Er³⁺, BaYF₅:Er³⁺, BaF₃: Yb³⁺,Er³⁺ and LaF₃: Yb³⁺,Er³⁺ nanoparticles modified by oleic acid were prepared using suface modification methed. Infrared spectroscopy (IR) was used to investigate the structure of the modified nanoparticles. The results indicate that oleic acid is bonded to the surface of nanoparticles. The modified nanoparticles have good dispersive capacity in organic solvent and mineral oil.The synthesis of BaLiF₃:Er³⁺/PMMA, NaYF₄:Er³⁺/PMMA, BaYF₅:Er³⁺/PMMA, BaF₃: Yb³⁺,Er³⁺/PMMA and LaF₃: Yb³⁺,Er³⁺/PMMA hybrid materials were primarily studied. The difference of emission and excitation between BaLiF₃:Er³⁺/PMMA, NaYF₄:Er³⁺/PMMA , BaYF₅:Er³⁺/PMMA , BaF₃:Yb³⁺,Er³⁺/PMMA , LaF₃: Yb³⁺,Er³⁺/PMMA hybrid materials and BaLiF₃:Er³⁺, NaYF₄:Er³⁺, BaYF₅:Er³⁺ , BaF₃: Yb³⁺,Er³⁺ and LaF₃: Yb³⁺,Er³⁺ nanoparticles were discovered by the fluorescence spectra. The positions of peaks were not changed, but the intensity was weaken. ESEM images showed that the nanoparticles are uniform in PMMA.