Method for preparing copper-zinc-tin-sulfur film

A copper-zinc-tin-sulfur and thin-film technology, which is applied to electrical components, circuits, semiconductor devices, etc., can solve the problems of uneven surface and poor crystallinity of copper-zinc-tin-sulfur thin films, and achieves a single component, regular and controllable morphology, Conditionally controlled effects

Inactive Publication Date: 2015-12-23
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

A non-vacuum method is used to prepare the solar cell absorbing layer on the transparent conductive substrate. The preparation process is controllable, pollution-free, simple and easy, and a highly dense and regular copper-zinc-tin-sulfur film is prepared, which solves the crystallinity of the copper-zinc-tin-sulfur film. Problems with poor, uneven surfaces

Method used

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  • Method for preparing copper-zinc-tin-sulfur film
  • Method for preparing copper-zinc-tin-sulfur film
  • Method for preparing copper-zinc-tin-sulfur film

Examples

Experimental program
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Embodiment 1

[0030] First, the process such as Figure 7 , the specific operation steps are as follows:

[0031] (1) Cut out an ITO glass sheet with a length of 2 cm and a width of 2 cm;

[0032] (2) Ultrasonic cleaning the cut ITO glass substrate in soap solution, acetone, ethanol, and deionized water for 20 minutes in sequence, and soaking in the prepared alkaline cleaning solution for 30 seconds after cleaning. Concentrated ammonia water: hydrogen peroxide: distilled water is mixed according to the volume ratio = 1:1:5, take it out and dry it for later use;

[0033] (3) Use analytical-grade cupric chloride, zinc chloride, stannous chloride, and thiourea as solutes, dissolve them in 50ml of solvent 2-methoxyethanol, heat in a water bath to 65°C, and stir until the solution turns orange Transparent. According to the molar concentration (M), the concentrations of copper chloride and zinc chloride in the solution are 1.6 and 1 respectively; the concentrations of stannous chloride and thi...

Embodiment 2

[0044] The operation steps are as follows:

[0045] (1) with step (1) in embodiment 1;

[0046] (2) with step (2) in embodiment 1;

[0047] (3) Analytical-grade cupric chloride, zinc chloride, stannous chloride, and thiourea were used as solutes, dissolved in 50 ml of methanol, and magnetically stirred at room temperature to dissolve until the solution was bright yellow and transparent. According to the molar concentration (M), the concentrations of copper chloride and zinc chloride in the solution are 0.15 and 0.2 respectively; the concentrations of stannous chloride and thiourea are 0.15 and 1. In this method, the addition of compounds containing copper, zinc, tin and sulfur will have a certain order. According to the order of thiourea→zinc chloride→stannous chloride→cupric chloride, add to the solvent to dissolve.

[0048] (4) with step (4) in embodiment 1;

[0049] (5) Put the wet film obtained in step (4) into a quartz boat, then push the quartz boat into the middle a...

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Abstract

The invention discloses a method for preparing a copper-zinc-tin-sulfur film, and the method comprises the following steps: (1) washing a substrate: sequentially carrying out the ultrasonic washing of the substrate through liquid soap, acetone, ethanol and deionized water, enabling the substrate to be immersed into prepared alkaline washing liquid for some time, and drying the substrate for use; (2) preparing solution: sequentially enabling a compound containing copper, zinc, tin and sulfur to be dissolved in an alcohols solvent, and preparing a solution with certain concentration; (3) carrying out coating, wherein the manufacturing processes of spin coating, dipping, lifting or reel-to-reel can be employed; (4) carrying out preprocessing: enabling a coated wet film to be heated on an electric heating plate for several minutes under constant temperature, wherein step (3) and step (4) can be carried out for a plurality of times in a circulating manner in order to achieve an ideal film thickness; (5) carrying out annealing: carrying out annealing in an inert atmosphere under high temperature, and obtaining the copper-zinc-tin-sulfur film. The method is simple, is low in cost, is controllable in the whole process, causes no pollution, and is suitable for scale production.

Description

technical field [0001] The invention relates to a low-cost and simple method for preparing a copper-zinc-tin-sulfur thin film, which belongs to the technical field of photoelectric materials and new energy sources. Background technique [0002] With the global energy crisis and the continuous depletion of non-renewable resources, solar energy is becoming more and more important in the energy structure. The development of solar technology can reduce the use of fossil fuels in the power generation process, thereby reducing air pollution and global warming. Therefore, the development of high-efficiency and low-cost solar cell materials has become a research hotspot at home and abroad. Copper indium gallium selenide (CIGS) is currently a light-absorbing layer material with high photoelectric conversion efficiency and is widely used. However, selenium is toxic, and indium and gallium resources are scarce and expensive, which restricts the large-scale application of this type of s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/032
CPCH01L31/0326
Inventor 韩贵陆金花王敏李丹阳
Owner YANGZHOU UNIV
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