Preparation method for light anti-reflection protective film of space solar cell

Abstract

The invention relates to a preparation method for a light anti-reflection protective film of a space solar cell, which comprises the steps of: (1) taking ethanol, deionized water and tetraethoxysilane with the volume ratio of (40-45): (5-6): (9-12) as raw materials and hydrochloric acid as catalyst, carrying out hydrolysis polycondensation reaction at 65-75 DEG C, fully mixing and standing to prepare a coating film; (2) cleaning a substrate with acid and alkali, washing with the deionized water, then placing in the anhydrous ethanol for ultrasonic cleaning and drying for use; and (3) coating the substrate with a spin coating machine at room temperature, placing the substrate in a muffle furnace for baking after coating and cooling the coated substrate along with the furnace to obtain the light anti-reflection protective film of the space solar cell. The preparation method has simple process and low cost, and the prepared protective film has the advantages that the overall weight of a space solar cell assembly is reduced, the transmittance of cover glass is improved, the service life of the cell is obviously prolonged, the long-time working reliability is improved, and the protective film has essential practical significance.

Description

technical field [0001] The invention belongs to the field of surface treatment of space solar cells, and in particular relates to a preparation method of a lightweight antireflection protective film for space solar cells. Background technique [0002] Space solar cells generally use a glass protective cover to physically protect the battery body, but since the thickness of the solar cell cover is about 0.08-0.30mm, its own weight consumes a large part of the launch and space operation energy, which increases the cost of space operation. At the same time, the process of encapsulating the cover glass and the battery with glue not only consumes a lot of manpower and material resources, but also is prone to unnecessary losses such as dirty glue; The bombardment of the glass surface will affect the smoothness and light transmittance of the glass surface, thereby greatly reducing the photoelectric conversion efficiency of the solar cell. These are the main defects faced by the sp...

AI Technical Summary

Problems solved by technology

[0002] Space solar cells generally use glass protective covers to physically protect the main body of the battery, but since the thickness of the solar cell cover is about 0.08-0.30mm, its own weight consumes a large part of the launch and space operation energy, which increases the cost of space operations

At the same time, the process of encapsulating the cover glass and the battery with glue not only consumes a lot of manpower and material resources, but also is prone to unnecessary losses such as dirty glue; The bombardment of glass surface, light transmittance and other properties will be affected, thereby greatly reducing the photoelectric conversion efficiency of solar cells

These are the main defects faced by space solar cell cover sheets at present, which greatly affect the launch and work costs, efficiency, service life and reliability of space vehicles.

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