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A kind of preparation method of thin-film solar cell ag/al core-shell composite nanoparticle light trapping structure

A technology of thin-film solar cells and composite nanoparticles, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem that the photoelectric conversion efficiency is not very significant, so as to improve the photoelectric conversion efficiency and eliminate The effect of broadening the spectral half-maximum width, simple and repeatable

Inactive Publication Date: 2015-12-23
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of these research works are limited to a single pure metal nanoparticle, which can only enhance the absorption of the battery in the local spectral range, and the improvement of its photoelectric conversion efficiency is not very significant.

Method used

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  • A kind of preparation method of thin-film solar cell ag/al core-shell composite nanoparticle light trapping structure
  • A kind of preparation method of thin-film solar cell ag/al core-shell composite nanoparticle light trapping structure
  • A kind of preparation method of thin-film solar cell ag/al core-shell composite nanoparticle light trapping structure

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preparation example Construction

[0024] A method for preparing a thin-film solar cell Ag / Al core-shell composite nanoparticle light-trapping structure, comprising the following steps:

[0025] Step 1: Select the base material;

[0026] Step 2: Prepare an Ag thin film at room temperature by magnetron sputtering on the base material;

[0027] Step 3: performing in-situ annealing on the Ag film to form Ag core nanoparticles;

[0028] Step 4: On the base material of the prepared Ag core nanoparticles, the Al thin film is prepared at room temperature by magnetron sputtering again;

[0029] Step 5: Perform in-situ annealing on the Al film to form the Al shell nanoparticles and at the same time form the Ag / Al core-shell composite nanoparticle light-trapping structure of the thin film solar cell;

[0030] Step 6: improve the solar cell device process, and prepare a thin film solar cell containing Ag / Al core-shell composite nanoparticle light-trapping structure.

[0031] The matrix material described in step 1 is t...

Embodiment 1

[0035] Step 1: Select the surface of the thin film solar cell as the base material;

[0036] Step 2: Prepare an Ag thin film at room temperature by magnetron sputtering on the base material, and the thickness of the Ag thin film is 10nm;

[0037] Step 3: performing in-situ annealing on the Ag thin film, the annealing temperature is 450° C. to form Ag core nanoparticles;

[0038] Step 4: On the base material of the prepared Ag core nanoparticles, the Al film is prepared at room temperature by the magnetron sputtering method again, and the thickness of the Al film is 7nm;

[0039] Step 5: Perform in-situ annealing on the Al thin film, the annealing temperature is 250°C, and at the same time form the Al shell nanoparticles, form the Ag / Al core-shell composite nanoparticle light-trapping structure of the thin film solar cell;

[0040] Step 6: improve the solar cell device process, and prepare thin-film solar cells containing Ag / Al core-shell composite nanoparticle light-trapping ...

Embodiment 2

[0042] Step 1: Select a solar cell device without an anti-reflection film as the base material;

[0043] Step 2: Prepare an Ag thin film at room temperature by magnetron sputtering on the base material, and the thickness of the Ag thin film is 7nm;

[0044] Step 3: performing in-situ annealing on the Ag thin film at a temperature of 500°C to form Ag core nanoparticles;

[0045] Step 4: On the base material of the prepared Ag core nanoparticles, the Al film is prepared at room temperature by magnetron sputtering again, and the Al film is 8nm;

[0046] Step 5: Perform in-situ annealing on the Al thin film, the annealing temperature is 300°C, and at the same time form the Al shell nanoparticles, form the Ag / Al core-shell composite nanoparticle light-trapping structure of the thin film solar cell;

[0047] Step 6: Prepare an anti-reflection film, improve the solar cell device process, and prepare a thin-film solar cell containing Ag / Al core-shell composite nanoparticle light-trap...

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Abstract

The invention belongs to the technical field of thin film solar cells, and discloses a manufacturing method for an Ag / Al core shell composite nanometer particle light trapping structure of a thin film solar cell. The Ag / Al core shell composite nanometer particle light trapping structure is manufactured through a method of combining magnetron sputtering and in situ annealing, and the magnetron sputtering method for manufacturing metal nanometer particles is simple, easy to conduct and good in repeatability. Therefore, Ag / Al core shell composite nanometer particles with different appearances, different core shell sizes and different surface coverage rates are manufactured easily by changing process parameters such as the thickness of a thin film and annealing temperature. By changing the process parameters, the optical performance of the nanometer particles can be effectively adjusted, and the extinction spectrum peak of the nanometer particles is widened. The extinction peak position of the nanometers is adjustable within the range of 350-700 mm, extinction spectrum half-width is obviously widened, and the photovoltaic conversion efficiency of the solar cell can be largely improved when the manometer particles are used for manufacturing the light trapping structure of the amorphous silicon thin film solar cell.

Description

technical field [0001] The invention belongs to the technical field of thin-film solar cells, and in particular relates to a preparation method of an Ag / Al core-shell composite nanoparticle light-trapping structure of a thin-film solar cell. Background technique [0002] In recent years, utilizing the unique optical absorption properties of surface plasmons of metal nanoparticles as a new light-trapping structure for thin-film solar cells has attracted extensive attention. The M.A.Green group of the University of New South Wales in Australia used Ag nanoparticles to enhance the light absorption performance of silicon solar cells, which increased the light absorption performance of crystalline silicon solar cells by 7 times near the wavelength of 1200nm, and the light absorption performance of polycrystalline silicon thin film solar cells near the wavelength of 1050nm Increased by 16 times. K. Nakayama et al. deposited a layer of Ag nanoparticles on the surface of GaAs solar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/20B82Y40/00B82Y30/00
CPCY02P70/50
Inventor 白一鸣辛雅焜高征吴强何海洋刘海陈诺夫
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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