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Integration of Laser-Welded Ag Nanowire Transparent Conducting Layers on Photovoltaic Devices

processed NW network
Processed NW network

nanowire (NW) networks are promising alternatives for transparent conducting
layers in applications ranging from organic flexible electronics to rigid photovoltaics.
However, the thermal processing typically used to improve electrical
conductivity is incompatible with many low-temperature devices of interest.
Here, we demonstrate the integration of a Ag NW network directly printed on top
of a hybrid organic photovoltaic device [1]. The NWs are dispersed on the
device and the network is welded together using a plasmonic
mediated pulsed laser processing method developed in our group to localize the
incident heating at the NW junctions. Results show high efficiency and an
improved fill factor as compared to traditional vapor deposited electrodes.
On-going work examines the nature of these non-traditional interfaces and the
application of this technique to other organic electronic devices of interest.

Current-voltage (IV) curves for standard device

(IV) curves for standard device using a vapor deposited metal grid versus a
laser welded nanowire network electrode. The efficiency is approximately the
same but the fill factor is significantly improved.