Title:	Particle-induced Degradation of III-V Multi-Junction Solar Cells under Different Configurations of Displacement Damage Dose
Author(s):	S. Duzellier, T. Nuns, R. Rey, C. Pons, S. Yjjou, A. Varotsou, C. Baur, C. Noemayr, A. Grás, A. Martinez de Olcoz
Keywords:	Multijunction Solar Cell, Qualification and Testing, Radiation Damage, Space, III-V Semiconductors
Topic:	PV Systems Engineering, Integrated/Applied PV
Subtopic:	PV for Space Applications
Event:	8th World Conference on Photovoltaic Energy Conversion
Session:	4DO.16.4
ISBN:	3-936338-86-8
Price:	0,00 EUR
Document(s):	presentation

Abstract/Summary:

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The solar arrays of spacecrafts are subjected to high radiative environment. Associated degradation rates are dependent on operational orbit configuration, and from a radiation effects point of view the new Electrical Orbit Raising (EOR) transfer orbits present a higher risk. The current models and tools approach to determine power degradation shall thus be validated to ensure good prediction accuracy. This paper reports on extensive irradiation test campaigns realized on triple junction solar cells in order to compare degradation induced by different configurations of the same displacement damage dose (DDD) in the active layer. Results are conclusive regarding the equivalence of degradation obtained with electrons and/or protons and accounting for local shielding.