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Method of synthesizing ferrous disulfide film by electro deposition oxidation and hot sulfurization

An iron disulfide and electrodeposition technology, applied in metal material coating process, coating and other directions, can solve the problems of weak bonding between film and substrate, complex equipment, low efficiency, etc., to avoid blocking effect, high efficiency, and preparation Simple process and equipment

Inactive Publication Date: 2005-06-08
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Formation of FeS by sulfidation of iron oxide prefabricated film 2 Membrane technology can effectively prevent the appearance of S-poor transition phases, and glass substrates are generally used to avoid uncontrollable abnormal doping caused by the substrate’s barrier to incident light and the diffusion of substrate atoms into the membrane. Plating or chemical vapor deposition, compared with electrodeposition technology, the equipment is more complicated, the film and the substrate are not firmly bonded, and the efficiency is not high

Method used

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  • Method of synthesizing ferrous disulfide film by electro deposition oxidation and hot sulfurization
  • Method of synthesizing ferrous disulfide film by electro deposition oxidation and hot sulfurization
  • Method of synthesizing ferrous disulfide film by electro deposition oxidation and hot sulfurization

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The ITO conductive glass with a size of 20×15mm2 is used as the substrate of the carrier film, and the conductive film composition is In 2 o 3 :SnO 2 =9:1, ultrasonic cleaning in acetone solution for 15 minutes, then ultrasonic cleaning in ethanol solution for 15 minutes, after ultrasonic cleaning, thoroughly rinse with ionized water to remove residual organic solution.

[0033] Prepare FeSO with a molar concentration ratio of 1:5 4 and Na 2 S 2 o 3 aqueous solution with diluted H 2 SO 4 Adjust the pH of the solution to 5.0. A Pt sheet was used as a counter electrode to deposit a Fe-S compound film on the substrate, maintaining a constant current of 0.75mA, and the deposition time was 20min. The deposited sample was rinsed with deionized water, soaked in absolute ethanol for 1 h, and then placed in an oven with dry air at 180 °C for 2 h for oxidation treatment, and the crystal structure was obtained as follows: figure 1 Shown Fe 3 o 4 Prefabricated film.

[...

Embodiment 2

[0036] Prepare the Fe-S compound film according to the method of Example 1, place the electrodeposited film in an oven with dry air at 220°C for 2 hours for oxidation treatment to obtain Fe 3 o 4 Prefabricated membranes with crystal structures such as image 3 shown.

[0037] Calculate the mass required to produce 40kPa nominal sulfur pressure sublimation sulfur powder (purity is 99.5%) under the condition of 450°C, and then convert the prefabricated membrane into FeS according to the method in Example 1 at 450°C for 5h 2 Thin film (vacuumization and argon replacement repeated 8 times before the quartz tube is packaged), the crystal structure is as follows Figure 4 shown.

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Abstract

A process for preparing the cubic crystal type FeS2 film by electric deposition, oxidizing and thermal sulfurizing includes such steps as electrically depositing Fe-S compound film on the electrically conductive glass subtrate in the aqueous solution of FeSO4 and Na2S2O3, oxidizing to obtain the precurse Fe3O4 film, and isothermal treating at 350-450 deg.C of sulfurizing temp to obtain cubic crystal type FeS2 film.

Description

technical field [0001] The invention relates to a preparation technology of a functional thin film. Background technique [0002] With the advancement of science and technology and the development of human civilization, the primary energy such as coal, oil and natural gas can no longer meet the needs, and its reserves are also rapidly decreasing. Moreover, during the use of these disposable energy sources, a large amount of gases harmful to humans will be released, destroying the environment on which humans depend. Therefore, the utilization of renewable resources has become the primary content of current scientific research. Among various renewable resources, inexhaustible solar energy has become the focus of new energy utilization and development. One of the main forms of development is to effectively convert sunlight energy into electrical energy for the benefit of mankind. [0003] A solar cell is a device that directly converts light energy into electrical energy. The...

Claims

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Application Information

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IPC IPC(8): C23C26/00
Inventor 孟亮刘艳辉侯玲
Owner ZHEJIANG UNIV
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