Vapor Coating Method Using Small-Molecule Organic Surface Modifiers to Replace N‑Type Metal Oxide Layers in Inverted Polymer Solar Cells
journal contributionposted on 14.05.2014 by Hyosung Choi, Hak-Beom Kim, Seo-Jin Ko, Gi-Hwan Kim, Jin Young Kim
Any type of content formally published in an academic journal, usually following a peer-review process.
We investigate a simple fabrication method for vapor coating small-molecule organic interlayers as replacements for metal oxide films. The interfacial layers, which serve both as both surface modifiers to reduce the substrate work function and electron selective layers, maximize light absorption within the active layer while improving electron transport and compatibility between the active layer and cathode, leading to a ∼22% enhancement in power conversion efficiency and similar air stability compared to devices using a ZnO layer.