Abstract
Coverglasses are used to protect solar cells from damages caused by space environment irradiation. Damage to coverglasses from space irradiation, the electrostatic discharge and even the breakdown related to surface charging of coverglass are among the main reasons for malfunctioning of solar cells in space missions. This paper using dielectric temperature spectroscopy investigated the typical solar cell coverglasses that were exposed in ground-based simulators to space environments, such as thermal cycling, proton-beam irradiation, electron-beam irradiation, ultraviolet irradiation and their synergistic irradiation. The dielectric properties of coverglasses were measured using a broadband dielectric spectrometer with the frequency range from 0.1 Hz to 1 MHz at temperatures ranging from −140 to 120 °C. It was found that the dielectric constants of five kinds of irradiated coverglasses increase to different degrees at different temperatures compared with the virgin coverglass. And irradiation has little effect on the dielectric loss, DC conductivity and DC conductivity activation energy of coverglasses.
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Acknowledgements
The authors acknowledge the funding by Japan Aerospace Exploration Agency, and the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20120201120009), and China Postdoctoral Science Foundation (2013M532047). We also thank Qioptiq Space Technology, UK for the free coverglasses.
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Chen, Y., Chen, L., Toyoda, K., Cho, M., Cheng, Y. (2017). Dielectric Temperature Spectroscopy of Degraded Solar Cell Coverglass Due to Ground-Based Space Environmental Irradiation. In: Kleiman, J. (eds) Protection of Materials and Structures from the Space Environment. Astrophysics and Space Science Proceedings, vol 47. Springer, Cham. https://doi.org/10.1007/978-3-319-19309-0_12
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DOI: https://doi.org/10.1007/978-3-319-19309-0_12
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