Corrosive liquid, and preparation method and application thereof

Abstract

The invention provides a corrosive liquid, and a preparation method and application thereof. The corrosive liquid is prepared from, by mass, 0.5-4.5% of alkali, 0.01-0.225% of potassium sorbate, 0.01-0.225% of sodium acetate, 0.005-0.15% of sodium dodecyl benzene sulfate, 0.055-0.46% of a de-foaming agent, 0.055-0.78% of a surfactant, 0.035-0.42% of a dispersing agent, 0.47-4.42% of a functional auxiliary agent, and the balance of water. When the corrosive liquid is used for preparing a substrate layer, the corrosive liquid can control the back surface of a substrate to form a relatively uniform pyramid-shaped suede, can ensure that an emitter layer on the front surface of the substrate is not damaged, and can control the size of the pyramid to keep a relatively low pyramid-shaped height-width ratio, so that the specific surface area of the suede on the back surface is reduced, the back surface passivation is facilitated, and the composition is reduced; and the solar energy conversion efficiency of the N-type contact cell is improved.

Description

technical field [0001] The invention belongs to the field of corrosion, and relates to a corrosion solution and a preparation method and application thereof. Background technique [0002] Corrosion refers to the chemical reaction on the surface of a substance when it is in contact and is destroyed. Although corrosion can cause damage to the surface of a substance to a certain extent, everything always has two sides. If the corrosion process is applied to a suitable field and a suitable environment Among them, it will play a corresponding role in our life and industrial production; such as corroding glass, you can get glass with specific patterns, such as metallographic corrosion, it can be used to prepare alloys, or you can use corrosion The principle is used to remove unwanted impurities or obtain substances needed by humans. [0003] CN109553305A discloses a glass corrosion solution, which is composed of phosphate, pyrophosphate, inorganic alkali, surfactant and deionized...

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Problems solved by technology

[0003] CN109553305A discloses a glass corrosion solution, which is composed of phosphate, pyrophosphate, inorganic alkali, surfactant and deionized water, and its weight fractions are: phosphate accounts for 0.5% to 8%, pyrophosphate accounts for 0.5 % to 8%, inorganic bases account for 0.01% to 0.5%, surfactants account for 5 to 45%, deionized water accounts for 30 to 95%, and contain 20-99% by weight of potassium difluoride and 1-80% by weight of at least A water-soluble polyvalent cation salt; the glass corrosion solution has a good corrosion effect on glass, but its application range is too narrow, and it is only suitable for glass corrosion

[0004] CN107604360A discloses a selective copper corrosion solution, comprising: 1-20% oxidant, 0.001-5% hydrogen peroxide stabilizer, 0.01-10% inorganic acid, 1-4% soluble organic Acid divalent copper salt, 0.01-8% chelating agent and / or corrosion inhibitor, 0.001-3% surfactant and the balance of water, the main composition of the oxidant is hydrogen peroxide; the corrosion solution can achieve uniform etching , thus controlling the shape of the electrode, but it is only known to play a role in corrosion

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