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Dr. Matthew Bzdok Nomi
Organic photovoltaic cells (OPVs) have been studied for a long time, and due to their high photovoltaic performance of around 12%, practical realisations have also been ongoing. In this study, we created typical OPVs and looked at how annealing the MoOx layer affected the efficiency of optical-to-electrical conversion. After annealing at 160°C for 5 minutes, the photoconversion efficiency increased from 2.05% to 5.65%, and the external quantum efficiency likewise increased for all measured wavelengths between 300 and 900 nm. Among photovoltaic metrics, the short circuit current density increased in particular. During analysis of the impedance test, it was discovered that the carrier transport resistance of the photoactive layer had decreased. These findings show that the thermal annealing of the MoOx layer successfully eliminated flaws at the MoOx/organic interface. The annealed device’s exceptional device performance was made possible by the efficient carrier transfer. The annealing procedure significantly decreased the relaxation and electron recombination periods, which increased photovoltaic performance