High energy electron radiation degradation of gallium arsenide solar cells
Gold, Don William
Fuhs, Allen E.
Powers, John P.
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A need existed to perform high energy electron irradiation experiments on gallium arsenide solar cells. To support this research, an automated solar cell test facility was constructed, gallium arsenide solar cells were obtained, and the Naval Postgraduate School LINAC facility was utilized to irradiate the cells to selected fluence levels at 20 MEV energies. Equivalent damage coefficients were calculated, and it was found that the average maximum power output decreased by 50 % following a cumulative irradiation by electrons to a total fluence of 1 x 1015 e/cm2 .