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Light emitting diodes (LED) are increasingly being used as light sources in studying solar cells due to their high power and bulb lifetimes. While LEDs provide higher power, they have a comparatively broad emission spectrum. This study compares the effect of using an LED based illumination on measurements of the external quantum efficiency (EQE) for silicon solar cell with monochromatic light source...
Temperature-dependent lifetime spectroscopy is a well-established characterization technique used to determine the energy level of recombination centers (defects). The determination of the energy level is performed through analysis of measured lifetime over a range of temperatures at a fixed excess carrier concentration. In recent years, photoluminescence imaging has been extensively used for spatially...
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