Silver nanowires network-based electrode for metal–semiconductor-metal perovskite solar devices

Here, we report on the progress of our work on fabrication of simple metal–semiconductor-metal perovskite solar cells, in which the metal electrodes directly contact the perovskite layer to create Schottky junction solar cells. The photovoltaic properties of the device strongly depend on the asymmetry in work function values of two metal contacts, which are gold back-contact electrode and silver nanowires percolation network. Modified polyol synthesis was used to produce silver nanowires. To achieve homogeneous, uniform and highly-conductive network formed by silver nanowires on the perovskite layer, various fabrication protocols (deposition technique, ambience, solvent, volume, etc.) have been tested. We have developed several protocols for obtaining silver nanowires network-based electrodes deposited on top of thin perovskite films on glass substrates with the sheet resistances of the silver nanowires network as small as ~ 2 KX/h.