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Method for preparing copper-gallium-selenium photoelectric thin film from copper chloride and gallium chloride

A photoelectric thin film and gallium chloride technology, which is applied in the field of photovoltaic thin film preparation for solar cells, can solve the problems of complex process routes, low cost, and high production cost, and achieve the effects of low equipment requirements, low cost, and low production cost

Inactive Publication Date: 2016-10-26
SHANDONG JIANZHU UNIV
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AI Technical Summary

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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Experimental program
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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 chloride, 1.5 parts of gallium chloride and 2.0 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 samp...

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Abstract

The invention discloses a method for preparing a copper-gallium-selenium photoelectric thin film from copper chloride and gallium chloride, and belongs to the technical field of preparation of photoelectric thin films for solar cells. The method comprises the following steps: cleaning a glass substrate first, then putting copper chloride, gallium chloride and selenium dioxide into a solvent, adjusting the pH value to 4.0-7.0, spinning the mixture onto the glass substrate to obtain a precursor thin film, drying, putting the precursor thin film into an airtight container containing diamide hydrate which is not in contact with the precursor thin film sample, charging the airtight container filled with the sample into an oven, heating and preserving the heat, finally taking out and drying the sample to obtain the copper-gallium-selenium photoelectric thin film. The method does not need high temperature or high vacuum, and is low in requirement for instruments, low in production cost, high in production efficiency and easy to operate. The copper-gallium-selenium photoelectric thin film has good continuity and uniformity; the main phase is a copper-gallium-selenium phase, and the new process easily controls the component and the structure of the target product, so that a production cost with low cost and capability of realizing industrialization is provided for preparing a high-performance copper-gallium-selenium photoelectric thin 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 chloride and gallium chloride. 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 d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/032
CPCH01L31/0322Y02E10/541Y02P70/50
Inventor 刘科高王志刚吴海洋李静石磊
Owner SHANDONG JIANZHU UNIV
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