Analysis of spectral mismatch error influences on short-circuit current measurement of reference solar cell

Spectral mismatch error should be carefully considered during the calibration of solar cells by means of solar simulator and calibrated reference cell. Even test and reference cells with the same type should be also considered spectral mismatch error to achieve good measurement results. Spectral mismatch error can be calculated with the relative spectral response of the test and reference cells, and the relative spectral irradiance of the simulator and reference solar. The reference solar spectral irradiance distribution was given according to IEC60904-3:2008. Experimental results, two cells, one test and one ref, with two different spectra solar simulators, were presented. The calculation method and experimental data presented could be positive reference to photovoltaic labs to obtain good calibration and test results of solar cells.