Spatially resolved photoluminescence imaging of essential silicon solar cell parameters and comparison with CELLO measurements

We present a method to image the following parameters spatially resolved of a solar cell: voltage Vxy, current density Jxy, power density Pxy, efficiency ηxy, series resistance Rs,xy, fill factor FFxy and dark saturation current densities of a two diode model J01,xy and J02,xy. The algorithm determines this set of self-consistent parameters by using a minimum of 5 electrical biased photoluminescence images. A comparison with CELLO measurements supports the presented method.

► Method to produce 9 different images of essential solar cell parameters via PL.
► Some images are the first published luminescence based images, including J01, J02, and efficiency map.
► This method is spatially resolved, fast, non-destructive and accurate.
► The result maps have qualitative agreement with “CELLO measurements”.
► The method could be a revolutionary milestone for luminescence imaging analysis.