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Silver-copper bimetallic thin film for light anode and laser-induced membrane-changing method

A laser-induced film replacement and bimetal technology, applied in the field of solar cells, can solve the problems of long preparation time and high cost, and achieve the effect of alleviating energy pressure, reducing over-reliance, and promoting green and low-cost development

Inactive Publication Date: 2012-01-04
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of long preparation time and high cost in the prior art, the present invention proposes a silver-copper bimetallic thin film for photoanodes and a method for laser-induced film replacement

Method used

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  • Silver-copper bimetallic thin film for light anode and laser-induced membrane-changing method
  • Silver-copper bimetallic thin film for light anode and laser-induced membrane-changing method
  • Silver-copper bimetallic thin film for light anode and laser-induced membrane-changing method

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Embodiment 1

[0038] This embodiment is a silver-copper bimetallic thin film modified TiO 2 Photoanode, the size of the modified photoanode is 1cm×1cm.

[0039] The molar ratio of silver to copper in the silver-copper bimetallic thin film of the photoanode proposed in this embodiment is 1:1.

[0040] This embodiment also proposes a method for laser-induced film replacement of photoanode films, which uses the above-mentioned silver and copper bimetallic films to modify TiO by laser-induced film replacement. 2 Photoanode, the specific process is as follows:

[0041] Step 1, processing the titanium foil: Cut the titanium foil into strips of 1 cm×5 cm, polish, and ultrasonically clean with acetone, absolute ethanol and deionized water for 5 minutes each; the ultrasonic power is 200W.

[0042] Step 2, prepare electrolyte: said electrolyte includes polishing electrolyte, electrodeposition electrolyte and test electrolyte. The polishing electrolyte is composed of 5% hydrofluoric acid, 45% nitri...

Embodiment 2

[0049] This embodiment is a silver-copper bimetallic thin film modified TiO 2 Photoanode, the size of the modified photoanode is 1cm×1cm.

[0050] The molar ratio of silver to copper in the silver-copper bimetallic thin film of the photoanode proposed in this embodiment is 7:3.

[0051] This embodiment also proposes a method for laser-induced film replacement of photoanode films, which uses the above-mentioned silver and copper bimetallic films to modify TiO by laser-induced film replacement. 2 Photoanode, the specific process is as follows:

[0052] Step 1, processing the titanium foil: Cut the titanium foil into strips of 1 cm×5 cm, polish, and ultrasonically clean with acetone, absolute ethanol and deionized water for 5 minutes each; the ultrasonic power is 200W.

[0053] Step 2, prepare electrolyte: said electrolyte includes polishing electrolyte, electrodeposition electrolyte and test electrolyte. The polishing electrolyte is composed of 5% hydrofluoric acid, 45% nitri...

Embodiment 3

[0060] This embodiment is a silver-copper bimetallic thin film modified TiO 2 Photoanode, the size of the modified photoanode is 1cm×1cm.

[0061] The molar ratio of silver to copper in the silver-copper bimetallic thin film of the photoanode proposed in this embodiment is 2:8.

[0062] This embodiment also proposes a method for laser-induced film replacement of photoanode films, which uses the above-mentioned silver and copper bimetallic films to modify TiO by laser-induced film replacement. 2 Photoanode, the specific process is as follows:

[0063] Step 1, processing the titanium foil: Cut the titanium foil into strips of 1 cm×5 cm, polish, and ultrasonically clean with acetone, absolute ethanol and deionized water for 5 minutes each; the ultrasonic power is 200W.

[0064]Step 2, prepare electrolyte: said electrolyte includes polishing electrolyte, electrodeposition electrolyte and test electrolyte. The polishing electrolyte is composed of 5% hydrofluoric acid, 45% nitric...

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Abstract

The invention relates to a silver-copper bimetallic thin film for a light anode and a laser-induced membrane-changing method. In the silver-copper bimetallic thin film, the molar ratio of silver to copper is (1-7):(1-8). Dye sensitized solar cell light anode with an Ag-Cu bimetallic-TiO2 composite structure is prepared by substituting a laser-induced membrane-changing preparation method for an electron beam photoetching method and substituting an Ag-Cu bimetallic material for Au to serve as a surface plasma medium. A metallic titanium-supported titanium oxide membrane serves as a receiving substrate; the silver-copper thin film serves as a source matrix; the metallic titanium-supported titanium oxide membrane is placed below indium tin oxide (ITO) glass where the silver-copper thin film is deposited to perform laser-induced membrane changing. By the silver-copper bimetallic thin film for the light anode and the laser-induced membrane-changing method, dependence on high-cost noble metal in the prior art can be reduced, photovoltaic property of the dye sensitized solar cell is further improved, solar energy can be utilized to a larger degree, energy pressure can be relieved, and environment-friendly and low-cost development of the dye sensitized solar cell technique can be further promoted.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a film used for photoanodes and a laser-induced film replacement method. Background technique [0002] Solar energy conversion refers to the process of converting solar energy into chemical energy and electrical energy through photosensitive materials. Since the 1980s, Gratzel's research group at the Swiss Higher Industrial School in Lausanne reported a dye-sensitized TiO 2 Photoanode solar cells, published in Nature (1991, 353: 737 ~ 740) "A low-cost, high-efficiency solar-cell based on dye-sensitized colloidal TiO 2 films" paper, marking the birth of dye-sensitized solar cells (DS SC), which are based on TiO 2 As a photoanode, organic complexes and pure organic dyes are used as photosensitizers, and the theoretical conversion efficiency is stable at 10%. The main disadvantage of this battery is that the dyes are expensive, such as the price of dye N719 is 8000 yuan per g...

Claims

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Application Information

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IPC IPC(8): C25D5/10C25D11/26H01L31/0224
Inventor 陈福义刘婧
Owner NORTHWESTERN POLYTECHNICAL UNIV
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