Simple spectrum band up-conversion luminescence nanocrystalline and preparation method thereof
A nanocrystal and spectral band technology, applied in the directions of luminescent materials, chemical instruments and methods, can solve the problems of energy dispersion, unfavorable rare earth ions and high-efficiency luminescence, and achieve narrow particle size distribution, high-efficiency single-band upconversion luminescence characteristics, low cost effect
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example 1
[0015] Example 1: Add 0.39 mmol of zirconium oxychloride, 0.10 mmol of ytterbium nitrate and 0.01 mmol of erbium nitrate to 40 mL of ethanol. After stirring to form a clear and clear solution, add dropwise to 25 mL of oleic acid, 5 mL of oleylamine and 2.5 g of oil In the mixed solution of sodium, fully stirred and transferred to a 100 mL hydrothermal kettle, then 1 mL of 3.0 mol / L ammonium fluoride aqueous solution was added dropwise, and finally kept at 110°C for 12 hours for solvothermal reaction. The obtained nanocrystals are washed with a mixture of ethanol and cyclohexane, and dried at 60° C. to obtain the final product.
[0016] Powder X-ray diffraction analysis and transmission electron microscope observation show that the synthesized product is pure tetragonal structure Na 3 ZrF 7 phase( figure 1 ), its scale is about 15 nanometers, and its shape is cubic ( figure 2 ). Under 980 nm laser irradiation, the synthesized Yb / Er: Na 3 ZrF 7 Nanocrystals can emit bright red lig...
example 2
[0017] Example 2: Add 0.39 mmol of zirconium oxychloride, 0.10 mmol of ytterbium nitrate and 0.01 mmol of thulium nitrate to 40 mL of ethanol. After stirring to form a clear and clear solution, add dropwise to 25 mL of oleic acid, 5 mL of oleylamine and 2.5 g of oil In the mixed solution of sodium, fully stirred and transferred to a 100 mL hydrothermal kettle, then 1 mL of 3.0 mol / L ammonium fluoride aqueous solution was added dropwise, and finally kept at 110°C for 12 hours for solvothermal reaction. The obtained nanocrystals are washed with a mixture of ethanol and cyclohexane, and dried at 60° C. to obtain the final product.
[0018] Powder X-ray diffraction analysis and transmission electron microscope observation show that the synthesized product is pure tetragonal structure Na 3 ZrF 7 The phase has a scale of about 15 nanometers and a cubic shape. Under 980nm laser irradiation, the synthesized Yb / Tm: Na 3 ZrF 7 Nanocrystals can emit strong near-infrared light, and the cente...
example 3
[0019] Example 3: Add 0.39 mmol of hafnium oxychloride, 0.10 mmol of ytterbium nitrate and 0.01 mmol of erbium nitrate to 40 mL of ethanol. After stirring to form a clear and clear solution, add dropwise to 25 mL of oleic acid, 5 mL of oleylamine and 2.5 g of oil In the mixed solution of sodium, fully stirred and transferred to a 100 mL hydrothermal kettle, then 1 mL of 3.0 mol / L ammonium fluoride aqueous solution was added dropwise, and finally kept at 110°C for 12 hours for solvothermal reaction. The obtained nanocrystals are washed with a mixture of ethanol and cyclohexane, and dried at 60° C. to obtain the final product.
[0020] Powder X-ray diffraction analysis and transmission electron microscope observation show that the synthesized product is pure tetragonal structure Na 3 HfF 7 The phase has a scale of about 15 nanometers and a cubic shape. Under 980 nm laser irradiation, the synthesized Yb / Er: Na 3 HfF 7 Nanocrystals can emit bright red light, with the center wavelengt...
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