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Method for using copper sulphate and gallium nitrate to prepare copper gallium selenide photoelectric film

A photoelectric thin film, gallium nitrate technology, applied in photovoltaic power generation, circuits, electrical components and other directions, can solve the problems of low cost, complex process route, high preparation cost, and achieve the effect of low cost, low equipment requirements, and low production cost

Inactive Publication Date: 2016-08-31
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Copper gallium selenide is a very promising solar cell material due to its low raw material cost and its band gap can be changed with the content of gallium, thereby improving the photoelectric conversion efficiency. However, the existing process route is complicated and the preparation cost is high. Therefore, it is also necessary to explore low-cost preparation processes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] a. Cleaning of the glass substrate: clean the glass substrate as described above, and the size of the substrate is 20mm×20mm.

[0025] b. Put 1.5 parts of copper sulfate, 2.4 parts of gallium nitrate hydrate and 1.7 parts of selenium dioxide into 378.07 parts of deionized water and mix evenly, add ammonia water to pH 4.5, and use ultrasonic vibration for more than 30 minutes to make the substances in the solution evenly mixed.

[0026] c. Drop the above solution onto the glass substrate placed on the homogenizer, then start the homogenizer, rotate the homogenizer at 300 rpm for 5 seconds, and rotate at 3000 rpm for 15 seconds, so that the dripped solution is coated After uniformity, the substrate was dried at 100°C, and then the above-mentioned solution was dripped and spin-coated again, and then dried again. This was repeated 10 times, and a precursor thin film sample with a certain thickness was obtained on the glass substrate.

[0027] d. Put the precursor thin film ...

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Abstract

The invention provides a method for using copper sulphate and gallium nitrate to prepare a copper gallium selenide photoelectric film, and belongs to the technical field of the preparation of the photoelectric film used for solar cells. The copper gallium selenide photoelectric film is obtained by the following steps of: firstly, cleaning a glass substrate, then, adding copper sulphate, gallium nitrate hydrate and selenium dioxide into a solvent, and adjusting the PH value to be 4.0-7.0; using a spin coating method to obtain a precursor film on the glass substrate, carrying out drying, and putting the precursor film into a closed container containing hydrazine hydrate; avoiding contact between the precursor film sample and hydrazine, and placing the closed container with the sample into a dyer for heating and heat preservation; and finally taking out the sample, carrying out drying, and obtaining the copper gallium selenide photoelectric film. According to the invention, the high-temperature high-vacuum condition is not needed, the requirements on instruments and equipment are low, the production cost is low, the production efficiency is high, and the operation is easy. The obtained copper gallium selenide photoelectric film is relatively good in continuity and uniformity, the main phase is the copper gallium selenide phase, the components and structure of a target product can be easily controlled in the new process, and the invention provides a low-cost industrialized production method for preparing the high-performance copper gallium selenide photoelectric film.

Description

technical field [0001] The invention belongs to the technical field of photoelectric film preparation for solar cells, and in particular relates to a method for preparing a copper gallium selenium photoelectric film from copper sulfate and gallium nitrate. Background technique [0002] Since the beginning of the 21st century, energy and environmental issues have become a hot spot that people pay more attention to. Facing energy depletion and environmental pollution caused by traditional energy sources, people began to gradually look for new energy sources that can replace traditional fossil energy sources. A new round of energy revolution is slowly pulling Prologue. Photovoltaic power generation has the advantages of safety and reliability, no noise, no pollution, less constraints, low failure rate, and easy maintenance. Solar energy, a clean, safe and environmentally friendly renewable energy, can be used. Therefore, the research and development of solar cells in recent dec...

Claims

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Application Information

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IPC IPC(8): H01L31/032C23C18/12
CPCC23C18/1204C23C18/1245C23C18/125H01L31/0322Y02E10/541Y02P70/50
Inventor 刘科高孙齐磊吴海洋李静石磊
Owner SHANDONG JIANZHU UNIV
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