Investigations on photovoltaic material absorptivity using hyperspectral photoluminescence excitation imaging

Special Issue on ‘Recent Advances in Spectroscopy and Microscopy of Thin-films Materials, Interfaces, and Solar Cells 2021', edited by A. Vossier, M. Gueunier-Farret, J.-P. Kleider and D. Mencaraglia

Open Access

Fig. 5

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Drift diffusion results. (a) Electron densities for different depths and times after the pulse. (b) Comparison between the square root of PL intensity averaged on the decay and the input absorptivity. The latter is obtained based on transmission and reflection measurements, prolongated with an exponential tail. The ordinates values are scaled to fit at 1.77 eV.

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