Transparent electrodes composed of silver nanowire networks for photovoltaic applications

Research is increasingly being dedicated towards replacing rare earth
elements in Transparent Conductive Materials (TCMs). In this work we present
the investigation of silver nanowire (AgNW) networks as transparent electrodes
for solar cell applications. Metallic nanowire networks can be deposited via low
cost deposition techniques and exhibit very interesting electrical, optical and
mechanical properties. Experimental and simulation approaches aim at
improving their physical properties. Indeed, we show that a thermal annealing
can drastically improve transport properties of the nearly transparent networks.
We also explore the optimization of the network density. These percolating
networks exhibit excellent properties (i.e. sheet resistances (Rs) of about 10 Ω/sq
and optical transparency of approximately 90%) compatible with solar
applications requirements. This makes them very appropriate for future uses in low cost, large area and flexible solar and display technologies. A comprehensive
understanding of the main physical properties of this promising nanostructured
network and its integration with solar cells will then be presented