Photovoltaic performance of TCVA-InSe hybrid solar cells based on nanostructure films

Abstract

Hybrid organic-inorganic solar cells of the configuration ITO/InSe/TCVA/Au have been fabricated using thermal evaporation technique. The electrical transport mechanisms of the manufactured cell were studied by performing the capacitance-voltage (C-V) and the current density-voltage (J-V) estimations. The TCVA/InSe cell displayed rectifying behavior with a rectification ratio of 157 at ±1V. At the lower voltages, the dark current density, J, is ruled by the thermionic emission instrument. While a space charge-limited-conduction mechanism was operated at a higher voltage. The fabricated cell demonstrates a significant improvement in the short circuit photocurrent density and the fill factor by including InSe layer, leading to nearly a nine-fold improvement in the conversion efficiency. The temperature dependent on photovoltaic parameters was also investigated in the temperature range of 303–373K. It found that the power conversion efficiency was increased with the increasing temperature.