Quantitative analysis of molecularly stacked layer structures in supported organic thin films by synchrotron grazing-incidence X-ray scattering

In this study, we derive a grazing-incidence X-ray scattering (GIXS) formula to analyze quantitatively GIXS patterns for molecularly stacked layer structures in substrate-supported nanoscale thin films. We apply this formula in the quantitative analysis of GIXS patterns obtained for S-docosanylcysteine thin films on silicon substrates with native oxide layers. This analysis successfully provides information on the structural parameters and orientation of the molecular layer stack developed in S-docosanylcysteine thin films.