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In-doped ZnO monodisperse nano granules and synthesizing method thereof

A nanoparticle and synthesis method technology, applied in the field of nanomaterials, can solve the problems of complex process, uneven doping, poor dispersion, etc., and achieve the effects of strong quantum confinement effect, simple preparation process and good repeatability

Inactive Publication Date: 2011-01-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantages of these preparation methods are that the equipment is expensive or the process is complicated, the dispersion is poor, the shape is irregular, and the doping is uneven, etc., and the diameter of the obtained In-doped ZnO nanoparticles is generally hundreds of nanometers to tens of nanometers. Solubility and optoelectronic properties can not meet the requirements of device applications, which greatly limits its application in the field of nano optoelectronic devices

Method used

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  • In-doped ZnO monodisperse nano granules and synthesizing method thereof
  • In-doped ZnO monodisperse nano granules and synthesizing method thereof
  • In-doped ZnO monodisperse nano granules and synthesizing method thereof

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Effect test

Embodiment 1

[0018] 1) Weigh 1mmol zinc stearate, 0.05mmol indium acetate (20:1 molar ratio) and 20g 1-octadecene in a 100ml reaction flask, heat up to 150°C under magnetic stirring, then pump the reaction flask Vacuum for 30 minutes to remove water vapor and oxygen in the reaction system. The temperature of the reaction solution was rapidly raised to 250° C. under a protective atmosphere of argon with a purity of 99%.

[0019] 2) Rapidly inject stearyl alcohol at a temperature of 200° C. into the reaction flask, keep it warm for 100 minutes, cool the reaction solution to room temperature with a water bath, and centrifuge the reaction mixture to obtain In-doped ZnO nanoparticles.

[0020] After drying the obtained white product, carry out XRD test, the test result is shown in figure 1 . figure 1 The peaks in are all the main peak positions of the wurtzite ZnO phase, which proves that the obtained product has a wurtzite structure; the TEM electron microscope photo of the product is shown ...

Embodiment 2

[0022] 1) Weigh 1mmol zinc myristate, 0.01mmol indium stearate (molar ratio is 100:1) and 20g octadecane and place it in a 100ml reaction flask, heat up to 125°C under magnetic stirring, then pump the reaction flask Vacuum for 10 minutes to remove water vapor and oxygen in the reaction system. The temperature of the reaction solution was rapidly raised to 300° C. under a protective atmosphere of argon with a purity of 99%.

[0023] 2) Rapidly inject stearyl alcohol at a temperature of 180°C into the reaction flask, keep it warm for 15 minutes, cool the reaction solution to room temperature with a water bath, and centrifuge the reaction mixture to obtain In-doped ZnO with a diameter of 5 to 7 nanometers. Monodisperse nanoparticles.

Embodiment 3

[0025] 1) Weigh 1mmol zinc acetate, 0.2mmol indium acetate (molar ratio is 5: 1) and 20g n-octyl ether and place in a 100ml reaction flask, heat up to 100°C under magnetic stirring, then vacuumize the reaction flask for 60 minutes, To remove water vapor and oxygen in the reaction system. The temperature of the reaction solution was rapidly raised to 260° C. under a protective atmosphere of nitrogen with a purity of 99%.

[0026] 2) Rapidly inject stearyl alcohol at a temperature of 230°C into the reaction flask, and keep it warm for 200 minutes, cool the reaction solution to room temperature with a water bath, and centrifuge the reaction mixture to obtain In-doped ZnO with a diameter of 30-50 nanometers. Monodisperse nanoparticles.

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Abstract

The invention discloses In-doped ZnO monodisperse nano granules and a synthesizing method thereof. The nano granules have hexagonal wurtzite structures, and the diameters of the granules are 1 to 100 nanometers. The synthesizing method comprises the following steps of: mixing fatty acid zinc, fatty acid indium and high-boiling organic solvent and putting the mixture into a reaction flask, heating the mixture to between 50 and 200 DEG C with magnetic stirring, pumping vacuum and removing water vapor and oxygen in the reaction system, heating the mixture to between 200 and 350 DEG C under the inert protective atmosphere, quickly injecting stearyl alcohol of 100 to 250 DEG C into the reaction flask, preserving the heat for 1 to 1,000 minutes, and performing centrifugal separation on the mixture to obtain the In-doped ZnO nano granules. The synthesizing method has the advantages of simple preparation process, low cost, good repeatability and easy industrialized production; and the obtained nano crystal has excellent photoelectric performance and is expected to be applied in many fields of flexible display, transparent electrodes, ultraviolet detection and the like.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to an In-doped ZnO monodisperse nanoparticle and a synthesis method thereof. Background technique [0002] ZnO is a II-VI compound semiconductor material with a band gap of 3.37eV at room temperature and an exciton binding energy of 60meV. It is ideal for preparing semiconductor lasers, ultraviolet detectors, blue-violet light-emitting diodes, etc. Ideal material. ZnO zero-dimensional nanomaterials have become a hot spot in the field of optoelectronic information research due to their superior optical and electrical properties than bulk materials due to quantum confinement effects, surface effects, and piezoelectric effects. Doping In in ZnO nanoparticles, allowing In to replace the position of Zn, can adjust its energy band and improve electrical properties, increase the concentration of free electrons in nanocrystals, and be used in the preparation of field-effect tra...

Claims

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Application Information

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IPC IPC(8): C30B29/16C30B29/62C30B7/14C01G9/02
Inventor 金一政陈栋栋叶志镇
Owner ZHEJIANG UNIV
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