  In this report, we describe a large-area Laser Beam Induced Current (LBIC)
microscope that has been adapted to perform Intensity Modulated Photocurrent
Spectroscopy in an imaging mode combined with automated J-V electrical
characterization. Henceforth we refer to the method as either Intensity
Modulated Photocurrent Micro-spectroscopy or simply IMPS microscopy. Microscopy
based IMPS aims to use the localised frequency response to correlate the
optoelectrical response with a particular interface, bulk material, specific
transport layer or transport parameter. The system developed here is
specifically designed to track the decomposition of organic solar cells
including hybrid-inorganic PSCs during long-term exposure to quantities such as
light, oxygen, moisture, and heat
