ZnO/ZnS/FeS 2-core-shell structure array film and preparing method

A technology of core-shell structure and film, which is applied in the field of ZnO/ZnS/FeS2 core-shell structure nanorod array film and its preparation, can solve the problems of not being able to absorb visible light, limit the utilization rate of sunlight, etc., and achieve improved light absorption and light response performance , good light absorption and light response performance, and high quantum efficiency

Inactive Publication Date: 2015-05-20
ZHEJIANG UNIV
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Problems solved by technology

However, the large forbidden band width of ZnO / ZnS heterojunction (E g(ZnO) =3.4 eV, E g(ZnS) =3.6 eV) severely limits its utilization of sunlight, which makes it unable to absorb visible light with a wavelength greater than 362nm in the solar spectrum

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  • ZnO/ZnS/FeS 2-core-shell structure array film and preparing method
  • ZnO/ZnS/FeS 2-core-shell structure array film and preparing method
  • ZnO/ZnS/FeS 2-core-shell structure array film and preparing method

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Embodiment Construction

[0031] With reference to accompanying drawing, further illustrate the present invention:

[0032] ZnO / ZnS / FeS 2 A method for preparing a core-shell structure array film, comprising the following steps:

[0033] 1) Use FTO conductive glass as the substrate, perform ultrasonic cleaning in acetone, absolute ethanol, and deionized water for 15 minutes, and dry the cleaned substrate for later use;

[0034] 2) Dissolve zinc acetate dihydrate in a mixed solution of ethylene glycol methyl ether and ethanolamine, the molar ratio of ethanolamine to zinc ions is 1:1, and dissolve the mixed solution of zinc acetate dihydrate, ethylene glycol methyl ether and ethanolamine at 60 Stir magnetically at ℃ until the zinc acetate dihydrate dissolves completely, forming a uniform and transparent seed layer solution;

[0035] 3) Immerse the substrate in the seed layer solution at room temperature, pull up the coating at a speed of 200 mm / min, dry the coated substrate at 80°C, repeat the above ope...

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Abstract

The invention relates to a preparing method of a ZnO / ZnS / FeS 2-core-shell structure array film. The preparing method comprises the following steps that FTO (fluorine-doped tin oxide) conducting glass is used as a substrate, and the substrate is cleaned for use; a uniform and transparent seed layer solution is prepared; the substrate is soaked into the seed layer solution at room temperature, and a uniform ZnO nanometer crystal seed layer is formed on the surface of the substrate; a uniform precursor solution is prepared; the surface of the substrate is provided with a uniform and compact ZnO nanometer rod array film; a ZnO / Fe(OH)3 composite nanometer rod array covers the surface of the substrate; a ZnO / Fe(OH)3 composite nanometer rod array film and sublimed sulfur powder with the purity of 99.5 percent are encapsulated in a quartz tube; the ZnO / Fe(OH)3 composite nanometer rod array is vulcanized to become a ZnO / ZnS / FeS 2-core-shell nanometer rod array. The preparing method has the advantages that visible light with the wavelength greater than 362nm in solar spectrum can be absorbed, and the light absorption and light response performance is good.

Description

technical field [0001] The present invention relates to a kind of ZnO / ZnS / FeS 2 Core-shell structure nanorod array thin film and preparation method thereof. technical background [0002] Component-tuned semiconductor heterojunctions, such as superlattices, core / shell structures, and biaxial nanoheterojunctions, which combine the versatility of individual components, are receiving increasing attention in the assembly of nanoscale optoelectronic devices. s concern. Among them, core / shell structure nanomaterials have attracted extensive research interest in the application fields of nanolasers, light emitting diodes, and ultraviolet light detectors, which mainly depend on their unique structures and physical and chemical properties. Considerable efforts have been devoted to the design and fabrication of core / shell structures, especially in the shape of spheres and 1D nanorods / nanowires. One-dimensional core / shell nanorod structures have become an area of ​​special interest d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/0296
CPCY02P70/50
Inventor 汪牡丹陈陈旭方攸同孟亮刘嘉斌
Owner ZHEJIANG UNIV
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