NaF has been considered as a material for the electron extraction layer in organic photovoltaic devices. Thin layers of NaF were evaporated onto phenyl-C61-butyric acid methyl ester and poly(3-hexylthiophene) thin films. The chemical state of NaF was observed for various layer thicknesses via X-ray photoelectron spectroscopy (XPS) for a very low deposition (∼1 Å) layer, a thick 30 Å layer, and also for sequential depositions of the salt.
Funders for this research include Australian Microscopy and Microanalysis Research Facility (AMMRF) at the South Australian node of the AMMRF under the National Collaborative Research Infrastructure Strategy, Australian National Fabrication Facility (ANFF) at the South Australian node of the ANFF under the National Collaborative Research Infrastructure Strategy.
For more information see https://pubs.acs.org/toc/jpccck/124/28
On the Growth of Evaporated Naf On Phenyl-c61-butyric Acid Methyl Ester and Poly(3-hexylthiophene). The Journal of Physical Chemistry C, 2020;124(28):15140-15151.