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Measuring method of solar cell protective coating optical transmittance

A technology of solar cells and protective coatings, applied in the measurement of phase influence characteristics, etc., can solve the problems of in-situ testing of simulated space environments, etc., and achieve the effect of eliminating thermal annealing effects

Inactive Publication Date: 2010-07-28
BEIHANG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for measuring the optical transmittance of the solar cell protective coating, to overcome the problem that the existing measurement method for the optical transmittance of the solar cell protective coating cannot realize the in-situ test in the simulated space environment, and to design a convenient Method for measuring optical transmittance of protective coatings

Method used

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  • Measuring method of solar cell protective coating optical transmittance
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  • Measuring method of solar cell protective coating optical transmittance

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Embodiment Construction

[0031] Such as figure 1 Shown, the implementation steps of the present invention are:

[0032] (1) Irradiate the cover glass with a larger particle fluence, so that its transmittance spectrum is basically unchanged in the subsequent irradiation environment.

[0033] (2) Under the irradiation of a solar constant (F(λ)), when the operating temperature of the battery measured by the temperature sensor is 25°C, the reference channel is irradiated with electrons and protons of a certain energy and fluence, and the normalized value of the solar battery is obtained by calibration. The relationship between the output power and the fluence of several electrons and protons with different energies; using the method of the US Naval Research Laboratory (NRL), the relationship calibrated by the above method is converted into the particle radiation damage dose of the solar cell and its The relationship between the output power is expressed by a solar cell damage characteristic curve 1.

[...

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Abstract

The invention relates to a measuring method of solar cell protective coating optical transmittance, which is characterized in that a method for measuring luminous flux I used for obtaining the optical performance of the protective coating. Firstly a glass cover sheet is radiated and aged, so the transmittance of the glass cover sheet is basically free from changing; then through the calibration experiment of few ground particle radiation and utilizing the method of American Naval Research Laboratory, the damage characteristic curve of the solar cell is determined under different light spectrums; the response of tri-nodal solar cell caused by the sunlight which is transmitted through the protective cover and the glass cover sheet is analyzed, and the output power equivalent change caused by the degradation of the solar cell is calculated by utilizing the damage characteristic curve of the solar cell calibrated through the ground experiment so as to separate the coupling effect of the solar cell degradation and the coating degradation and to obtain the evaluation value of the optical transmittance variation of the coating in the radiation environment. The measuring method has important significance on the round simulation environment in-situ test of the optical material for the space.

Description

technical field [0001] The invention relates to a method for measuring the optical transmittance of a protective coating of a solar cell, which is applicable to the in-situ test of the protective coating in a simulated space environment on the ground, and belongs to the field of space radiation test methods for aerospace optical coatings. Background technique [0002] Compared with traditional silicon solar cells and III-V compound solar cells, thin-film solar cells have the advantages of high-quality specific power, rollability, and high radiation resistance. In order to match the characteristics of thin-film solar cells, a new type of optical coating replaces the traditional glass cover as the protective layer of thin-film solar cells. The thin-film solar cells and optical protective coatings of the spacecraft will be subjected to various environmental factors such as atomic oxygen, solar electromagnetic radiation, ionosphere, Earth’s radiation belts, solar cosmic rays, an...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/41
Inventor 赵慧洁唐吾张颖邢辉王立张庆祥
Owner BEIHANG UNIV
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