1 research outputs found
Atmospheric and Aqueous Deposition of Polycrystalline Metal Oxides Using Mist-CVD for Highly Efficient Inverted Polymer Solar Cells
Large scale, cost-effective processing
of metal oxide thin films is critical for the fabrication of many
novel thin film electronics. To date, however, most of the reported
solution-based techniques require either extended thermal anneals
or additional synthetic steps. Here we report mist chemical vapor
deposition as a solution-based, readily scalable, and open-air method
to produce high-quality polycrystalline metal oxide thin films. Continuous,
smooth, and conformal deposition of metal oxide thin films is achieved
by tuning the solvent chemistry of Leidenfrost droplets to promote
finer control over the surface-local dissociation process of the atomized
zinc-bearing precursors. We demonstrate the deposited ZnO as highly
efficient electron transport layers for inverted polymer solar cells
to show the power of the approach. A highest efficiency of 8.7% is
achieved with a fill factor of 73%, comparable to that of conventional
so-gel ZnO, which serves as an indication of the efficient vertical
transport and electron collection achievable using this material