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A Method to Manipulate the Density and Optical Bandgap of ZnO Nanopillar Arrays

A zinc oxide nano and nano column array technology, which is applied in zinc oxide/zinc hydroxide, nanotechnology, nanotechnology, etc., can solve the problem that the density and optical bandgap of zinc oxide nano column array cannot be controlled at the same time

Active Publication Date: 2019-04-12
神华(北京)光伏科技研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the defect that the traditional hydrothermal method cannot simultaneously control the density and optical bandgap of zinc oxide nanocolumn arrays, and provide a method for manipulating the density and optical bandgap of zinc oxide nanocolumn arrays

Method used

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  • A Method to Manipulate the Density and Optical Bandgap of ZnO Nanopillar Arrays
  • A Method to Manipulate the Density and Optical Bandgap of ZnO Nanopillar Arrays
  • A Method to Manipulate the Density and Optical Bandgap of ZnO Nanopillar Arrays

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Embodiment 1-3

[0036] This embodiment is used to illustrate the method for manipulating the density and optical bandgap of the ZnO nanocolumn array provided by the present invention.

[0037] The aluminum-doped zinc oxide (AZO) transparent conductive film glass used as the growth substrate was cleaned in an ultrasonic bath of organic solvents (acetone and ethanol), and then ultrasonically cleaned with water.

[0038] Dissolve zinc acetate and hexamethylenetetramine with a molar ratio of 1:1 in water, ultrasonically dissolve and mix evenly, and prepare a mixed solution, then add different amounts of indium nitrate to it, ultrasonically dissolve and mix evenly, and obtain zinc acetate An aqueous solution with a concentration of 0.005mol / L and a concentration of hexamethylenetetramine of 0.005mol / L. The concentrations of indium nitrate in the aqueous solution are 1 μmol / L, 10 μmol / L and 50 μmol / L respectively, and the moles of indium nitrate and zinc acetate The ratios are 1:5000, 1:500 and 1:1...

Embodiment 4

[0041] This embodiment is used to illustrate the method for manipulating the density and optical bandgap of the ZnO nanocolumn array provided by the present invention.

[0042] Zinc oxide nanocolumn array material was synthesized according to the method of Example 1-3, the difference was that ammonium nitrate was added instead of indium nitrate in the process of preparing the mixed solution, and the concentration of ammonium nitrate was 0.05mol / L, thereby producing The ZnO nanocolumn array material A4 was obtained.

Embodiment 5-7

[0044] This embodiment is used to illustrate the method for manipulating the density and optical bandgap of the ZnO nanocolumn array provided by the present invention.

[0045] The aluminum-doped zinc oxide (AZO) transparent conductive film glass used as the growth substrate was cleaned in an ultrasonic bath of organic solvents (acetone and ethanol), and then ultrasonically cleaned with water.

[0046] Dissolve zinc acetate and hexamethylenetetramine with a molar ratio of 1:1 in water, ultrasonically dissolve and mix evenly, then add ammonium nitrate, ultrasonically dissolve and mix evenly, and prepare a mixed solution; finally add different amounts of indium nitrate to it , ultrasonically dissolved and mixed evenly to obtain an aqueous solution with a zinc acetate concentration of 0.005mol / L, a hexamethylenetetramine concentration of 0.005mol / L and an ammonium nitrate concentration of 0.05mol / L. The concentrations of indium nitrate in the aqueous solution are respectively 1μm...

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Abstract

The invention relates to a method for controlling the density and the optical band gap of a zinc oxide nanorod array. The method includes the steps that a solution containing a zinc source, an oxygen source and ammonium salt and / or indium salt is made in contact with a growth substrate under the condition of hydrothermal synthesis so that the zinc oxide nanorod array can grow on the growth substrate, wherein the density and the optical band gap of the zinc oxide nanorod array are controlled by controlling the concentration of ammonium salt and / or indium salt in the solution containing the zinc source, the oxygen source and ammonium salt and / or indium salt. By means of the method, the density and optical band gap of the ZnO nanorod array can be well controlled.

Description

technical field [0001] The invention belongs to the field of nanostructure materials, and in particular relates to a method for manipulating the density and optical bandgap of a zinc oxide nanocolumn array. Background technique [0002] As an important II-IV direct bandgap semiconductor material, ZnO has a forbidden band width of 3.37eV at room temperature and an exciton binding energy as high as 60meV. It is widely used in ultraviolet light detectors, gas sensors, light-emitting diodes and solar cells Broad application prospects. In recent years, optoelectronic devices such as thin-film solar cells based on ZnO nanostructures have attracted much attention. The introduction of ZnO nanocolumn arrays into traditional thin-film solar cells will improve the performance of solar cells from both optical and electrical aspects. The doping of Al, In, Ga and other elements has a significant effect on improving the conductivity and optical properties of ZnO nanomaterials. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02B82Y30/00
Inventor 汤洋赵颖陈颉
Owner 神华(北京)光伏科技研发有限公司