A method for measuring accurately and rapidly the current-voltage characteristics of high-capacitance photovoltaic devices using pulse sunlight simulators is detailed.The data acquisition is performed in a single light flash, whose duration can be as short as milliseconds.The innovation of the method is that it introduces the time as an independent variable in the Ⅳ measurement.The method allows sufficient time for every individual Ⅳ data point to relax from capacitive effects, while employing efficient time management to the applied measurement load to achieve full Ⅳ tracking in a single flash of light.The resulting Ⅳ characteristics are the same as would be measured under steady-state illumination conditions and thus, provide an accurate estimation of the actual performance of the solar cell or module under artificial sunlight.The method, which is called Dynamic Ⅳ, was experimentally verified against steady-state Ⅳ measurements showing excellent agreement with deviations lesser than 0.2% on maximum power output.