GaAs solar energy cell performance degeneration prediction method in space environment

Abstract

The invention provides a GaAs solar energy cell performance degeneration prediction method in a space environment. The method comprises the following four steps: (1) establishment of a one-dimensional model of a GaAs solar energy cell in the space environment; (2) consideration of space particle radiation damage on an effective life of a carrier; (3) calculation of GaAs solar cell temperature; (4) realization of GaAs solar energy cell performance degeneration prediction through calculating a volt-ampere characteristic. According to the method, coupling effects of a space thermal vacuum environment and a radiation environment on the GaAs solar energy cell are considered, through establishing the one-dimensional model of the GaAs solar energy cell in the space environment, based on a minority continuity equation, degeneration case of the solar cell is analyzed and obtained through the volt-ampere characteristic. he invention has a practical value and a broad application prospect in the spatial solar cell electrical performance test technology field.

Description

Technical field: [0001] The invention provides a method for predicting performance degradation of GaAs solar cells in a space environment. Based on the carrier continuity equation, this method analyzes the process of the coupling of temperature and carrier lifetime affecting the volt-ampere characteristics and key electrical performance parameters of GaAs solar cells by establishing a model of the thermal energy and spectral radiant energy transfer process of the battery, and A corresponding electrical performance degradation prediction method is proposed. The invention belongs to the technical field of electric performance testing of space solar cells. Background technique: [0002] A solar cell is a semiconductor device that converts energy, making it particularly suitable for use in spacecraft compared to other forms of power. In March 1958, the United States launched the Pioneer 1 satellite, which used silicon solar cells as the power supply for the satellite for the f...

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Problems solved by technology

Existing studies have shown that Rodolphe Vaille and others proposed a calculation model for the volt-ampere characteristics of Si solar cells in a ground thermal environment, and the US Jet Propulsion Laboratory (JPL) and the Naval Research Laboratory (NRL) respectively proposed a model based on previous test data. However, there is no comprehensive consideration of the solar cell electrical performance degradation model and prediction method under the joint action of the two space thermal environments and radiation environments.

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