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Optical models were developed for each of the stages of CIGS 3-stage deposition process using spectroscopic ellipsometry. The optical functions thus derived were used in an optical monitoring system installed in the pilot line at the PVMC's Halfmoon facility. This system consists of two fiber optic-based spectroscopic reflectometry units, set up in the sputtering line and the CIGS evaporation chamber...
The temperature coefficients of CIGS and c-Si modules were determined using both a Class C sun simulator and a Class A+ flash tester. The temperature coefficients were calculated following various light soaking procedures, and varying the heating and cooling ramps. The temperature coefficient determination was also carried out for bare cells (without lamination), and the results compared to measurements...
A set of photovoltaic panels including CIGS, CdTe and c-Si were subjected to different light soaking conditions of varying irradiance, module temperature, light soaking under load and under open circuit. It was observed that for every technology, light soaking under load results in improved performance. This improvement is of the same order for CIGS and c-Si panels, and higher for CdTe. A calculation...
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