基于网格状ITO薄膜的航天器太阳电池阵静电放电防护
收稿日期: 2014-10-13
修回日期: 2014-11-04
网络出版日期: 2014-11-24
基金资助
国家“973”计划(613211)
Electrostatic discharge protection of spacecraft solar cell array based on meshed ITO film
Received date: 2014-10-13
Revised date: 2014-11-04
Online published: 2014-11-24
Supported by
National Basic Research Program of China (613211)
表面蒸镀ITO薄膜是解决航天器太阳电池阵充放电问题的有效途径。薄膜会降低可见光透射率并增加航天器载荷,为此,提出一种网格状ITO薄膜解决方案。通过光学性能测试和电子辐照材料表面起电实验研究,分别给出了可见光平均透射率与薄膜覆盖率、表面电位与薄膜覆盖率的关系表达式,总结了平均透射率和表面电位随薄膜覆盖率的变化规律。结果表明,在380~780 nm可见光范围内,薄膜覆盖率每增加10%,平均透射率下降约0.7%;薄膜覆盖率为10%的样品表面电位比无薄膜覆盖降低54%;在薄膜覆盖率为10%~100%范围内,表面电位随覆盖率增大近似呈线性下降,薄膜覆盖率每增加10%,表面电位降低约9%。该研究结论可为航天器太阳电池阵静电防护研究提供有益参考。
刘浩 , 刘尚合 , 苏银涛 , 孙永卫 , 曹鹤飞 . 基于网格状ITO薄膜的航天器太阳电池阵静电放电防护[J]. 航空学报, 2015 , 36(10) : 3494 -3500 . DOI: 10.7527/S1000-6893.2014.0320
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.
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