New process for creating a stable silver nanowire transparent electrode
April 17, 2020
Indium tin oxide (ITO) has been widely used as transparent electrodes in optoelectronic devices thanks to its superior optical transmittance and low sheet resistance. However, the limited supply of indium, the high cost of sputtering, and the brittle nature of ITO inhibit its widespread adoption to next-generation flexible and stretchable electronics. Silver nanowire (AgNW) networks have been widely explored as a promising alternative to ITO, but their susceptibility to corrosion and thermal instability still remain limiting factors for widespread adoption in a range of devices including solar cells, transparent heaters, and light-emitting diodes.
In this new study, a team of researchers, including the Grossman group, report a scalable and economically viable process involving electrophoretic deposition (EPD) to fabricate a highly stable hybrid transparent electrode with a sandwich-like structure, where a AgNW network is covered by graphene oxide (GO) films on both sides. This double-sided silver nanowire transparent electrode has improved chemical and electrical stability.