In-flight I-V results from the 2 nd forward technology solar cell experiment

The 2nd Forward Technology Solar Cell Experiment (FTSCE II) on board the International Space Station, measured I-V curves on advanced solar cells for 18 months. In this paper we discuss the data reduction methodology of in-flight measurements. Degradation rates, temperature coefficients for production III-V triple junction cells, inverted metamorphic prototype cells, and other experimental solar cells are discussed in a related IEEE Journal of Photovoltaics submission.