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Method for doping earth ions in zinc oxide nano crystal

A zinc oxide nanometer and rare earth ion technology, applied in the field of doping rare earth ions, can solve the problems of high toxicity of n-hexane and environmental pollution, achieve the effects of scientific preparation method, improve optical activity, and inhibit surface dangling bonds and defects

Inactive Publication Date: 2013-01-02
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are deficiencies in both the finished product and its preparation process. First, the finished product only shows the effect diagram of one kind of rare earth element europium doping. Under excitation, it is not known whether the fluorescence output from different lattice positions can also be obtained; secondly, n-hexane is used to precipitate zinc oxide in the preparation process, because n-hexane is highly toxic, it is easy to cause environmental pollution

Method used

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  • Method for doping earth ions in zinc oxide nano crystal
  • Method for doping earth ions in zinc oxide nano crystal
  • Method for doping earth ions in zinc oxide nano crystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The specific steps of preparation are as follows: step 1, the rare earth acetate and zinc acetate are added into ethanol according to the molar percentage of rare earth acetate:zinc acetate respectively at a ratio of 1%:99%, heated and stirred under reflux until dissolved to obtain the concentration It is a 0.16M metal salt solution A1; wherein, the rare earth acetate is terbium acetate, and the stirring during reflux heating and stirring is performed by using a magnetic stirrer. Then ultrasonically dissolve lithium hydroxide in ethanol with the same volume as metal salt solution A1 to obtain lithium hydroxide solution A2 with a concentration of 0.32M; wherein, ultrasonic dissolution is assisted dissolution by ultrasonic waves emitted by an ultrasonic instrument.

[0021] Step 2, first add lithium hydroxide solution A2 dropwise to metal salt solution A1 at 0°C to obtain mixed solution A3; then place mixed solution A3 at 0°C for 1.5h to nucleate and react at room temperat...

Embodiment 2

[0026] The specific steps of preparation are as follows: step 1, firstly add rare earth acetate and zinc acetate into ethanol according to the molar percentage of rare earth acetate:zinc acetate respectively in the ratio of 2%:98%, heat and stir under reflux until dissolved, and obtain the concentration It is 0.18M metal salt solution A1; wherein, the rare earth acetate is terbium acetate, and the stirring during reflux heating and stirring is performed by using a magnetic stirrer. Then ultrasonically dissolve lithium hydroxide in ethanol with the same volume as the metal salt solution A1 to obtain lithium hydroxide solution A2 with a concentration of 0.36M; wherein, the ultrasonic dissolution is assisted dissolution by ultrasonic waves emitted by an ultrasonic instrument.

[0027] Step 2, first add lithium hydroxide solution A2 dropwise to metal salt solution A1 at 1°C to obtain mixed solution A3; then place mixed solution A3 at 1°C for nucleation for 1.3h, then react at room ...

Embodiment 3

[0032] The specific steps of preparation are as follows: step 1, firstly add rare earth acetate and zinc acetate into ethanol according to the molar percentage ratio of rare earth acetate:zinc acetate respectively 3%:97%, heat and stir under reflux until dissolved, and obtain the concentration It is a 0.2M metal salt solution A1; wherein, the rare earth acetate is terbium acetate, and the stirring during reflux heating and stirring is performed by using a magnetic stirrer. Then ultrasonically dissolve lithium hydroxide in ethanol with the same volume as metal salt solution A1 to obtain lithium hydroxide solution A2 with a concentration of 0.4M; wherein, ultrasonic dissolution is assisted dissolution by ultrasonic waves emitted by an ultrasonic instrument.

[0033] Step 2, firstly add lithium hydroxide solution A2 dropwise to metal salt solution A1 at 3°C ​​to obtain mixed solution A3; then place mixed solution A3 at 3°C ​​for nucleation for 1 hour, then react at room temperatur...

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Abstract

The invention discloses a method for doping earth ions in a zinc oxide nano crystal, which comprises the steps of: firstly, dropping a lithium hydroxide solution A2 with concentration of 0.32-0.48M into a metal salt solution A1 containing rare earth acetate and having the concentration of 0.16-0.24M for reacting, adding normal heptanes, then eccentrically treating, cleaning a sediment A with alcohol to obtain a nano crystal, dispersing the nano crystal into the alcohol to obtain a suspension with concentration of 0.08-0.12M, alternatively dropping a zinc acetate solution B1 with concentrationof 0.08-0.12M and a lithium hydroxide solution B2 with concentration of 0.16-0.24M into the stirring suspension for reacting, adding the normal heptanes and then eccentrically treating, cleaning a sediment B with alcohol to obtain an intermediate product, drying the intermediate product in vacuum and annealing at a temperature of 350-450 DEG C for above 1.5h to obtain the zinc oxide nano crystal doped with the earth ions. The invention can be widely applied to doping the earth ions in the zinc oxide nano crystal to ensure that the zinc oxide nano crystal has excellent optical property.

Description

technical field [0001] The invention relates to a method for doping rare earth ions in crystals, in particular to a method for doping rare earth ions in zinc oxide nano crystals. Background technique [0002] Zinc oxide is a wide-bandgap semiconductor material with a very large exciton binding energy (60meV), which is cheap and environmentally friendly, and can be widely used in the fields of light-emitting devices, lasers, photocatalysts and solar cells. Rare earth ion-doped zinc oxide materials have important applications in optical fiber amplifiers for optical communications and biomarkers. Based on this point, people have made unremitting efforts to obtain rare earth ion-doped zinc oxide materials, such as "a rare earth doped zinc oxide Zinc nanoluminescent material and its preparation method". It intends to provide a rare earth-doped ZnO nanocrystal with high luminous intensity and a process for preparing it; wherein, the composition of the prepared ZnO nanocrystal is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/54C09K11/78
Inventor 叶长辉季书林尹亮亮张立德
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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