Microprocessor-Based Solar Cell Measurement System

A microprocessor-based solar cell standard characteristics measurement system is described. Data aquisition and digital conversion of the current-to-voltage characteristics and the spectral response allows the performance of several operations as averaging, storage, minicomputer connection, and parameter determination of the theoretical models introduced. Several results are shown concerning the accuracy of the method on the determination of series resistance, reverse saturation current, and the minority carriers lifetime on the base region of solar cells.