Correcting lateral photon scattering in an InSb infrared detector

Both luminescence and lock-in thermography imaging, which are also evaluated quantitatively, are valuable methods for characterizing solar cells. For luminescence imaging of silicon solar cells it was recently discovered that photon scattering in the detector of the used camera leads to a certain amount of blurring, which may be corrected by image deconvolution for enabling a correct quantitative image interpretation. In this work the same effect is investigated for an infrared camera employing a cooled InSb-based quantum detector. It is found that also here the photon scattering effect exists, though its influence is weaker than for luminescence imaging.