基于网格状ITO薄膜的航天器太阳电池阵静电放电防护

doi:10.7527/S1000-6893.2014.0320

Abstract

Abstract:

It is an effective way to solve the charging and discharging problem of the spacecraft solar cell array by evaporating ITO (Indium Tin Oxide) films on the surface. The visible light transmittance of solar cells will be reduced and the spacecraft load will be increased because of the films. Therefore, a solution of meshed ITO film is proposed in this paper. The performance of optics and surface charging by electron irradiating is tested. The expressions of average transmittance and surface potential at different film coverage ratios are given and the visible light transmittance and surface potential variation with film coverage ratio is summed up. The results show that the average transmittance decreases by about 0.7% with each additional coverage ratio of 10%, in the range of 380-780 nm visible light; the surface potential of the sample which is at a coverage ratio of 10 is lower than that is uncovered by 54%; in the range of 10% to 100% coverage ratio, the surface potential is decreased approximately linearly with increasing coverage ratio; the surface potential is reduced by about 9% with each additional coverage ratio of 10%. The conclusions may provide a useful reference for the research of spacecraft solar cell arrays electrostatic protection.

Key words: spacecraft, ITO film, meshed, solar cell array, transmittance, surface potential, electrostatic discharge protection

CLC Number:

V254.2
TM914

LIU Hao, LIU Shanghe, SU Yintao, SUN Yongwei, CAO Hefei. Electrostatic discharge protection of spacecraft solar cell array based on meshed ITO film[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(10): 3494-3500.

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Electrostatic discharge protection of spacecraft solar cell array based on meshed ITO film

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