Results of flight demonstration of terrestrial solar cells by MDS-1 Tsubasa in GTO

Demonstration results of radiation resistance of six types of solar cells developed for terrestrial use in space by MDS-1 Tsubasa satellite are shown. The satellite has flown in the geostationary transfer orbit where radiation environment is quite severe. Monitored open-circuit voltage and short-circuit current values of the cells for duration of about 600 days after launch are analyzed. Super radiation tolerance of CuInGaSe2 solar cell is firstly demonstrated in actual space. Also, most of the cells are recognized to have capability or applicability for space use. Comparison of degradation trend of the flight data with that of ground irradiation test results using the displacement damage dose method reveals good agreement, indicating sufficient validity of ground test technique and accuracy of end-of-life prediction.
資料番号: AA0046975008
レポート番号: JAXA-RM-03-022