Institute of Space and Astronautical Science (ISAS)
Tokyo University of Technology
Japan Atomic Energy Research Institute Takasaki Radiation Chemistry Research Establishment
SPS 2000 is a study model of 10 MWatt solar power satellite in a 1,100 km equatorial orbit. For the power generator of SPS 2000, amorphous silicon (a-Si) solar cell, a thin film type developed for ground use, has been selected as a potential candidate. Since the a-Si solar cell is relatively newborn, its operational data in space are not sufficiently available. We have made radiation experiments for the a-Si solar cell by the electron and proton beam accelerators of the Japan Atomic Energy Research Institute. The effect of 0.15～3.0 MeV electron irradiation was studied up to the fluence of 1X 10＾16 electrons/cm＾2. For proton irradiation, the effect of the energy at 3～10 MeV was studied up to 2.5 X 10＾14 protons/cm＾2. According to the experimental results, the performance of the a-Si solar cell will be maintained more than 90% of the initial performance during 10 years for the orbit of SPS 2000. It is concluded that the a-Si solar cell is potentially promising for the SPS use.
a-Si太陽電池の耐放射線性の評価
SA0200077.pdf
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