A NEW PROCEDURE FOR THE ACCURATE INDOOR MEASUREMENT OF SOLAR-CELL I-V CHARACTERISTICS

The present work describes and validates a method for the adjustment of light intensity in indoor solar-cell I-V tests. The procedure basically consists of the evaluation of the spectral-mismatch parameter as a function of light intensity before measuring. The simulator is set to the irradiance that produces a spectral-mismatch parameter equal to unity (or to some other desired value) and only then is the I-V curve taken. The main advantages are: no need to use very similar reference and test cells, direct extraction of the right whole I-V curve without cell models and ease to measure under different light intensities.