ProLEED Studio: software for modeling low-energy electron diffraction patterns

Abstract

Low-energy electron diffraction patterns contain precise information about the structure of the surface studied. However, retrieving the real space lattice periodicity from complex diffraction patterns is challenging, especially when the modeled patterns originate from superlattices with large unit cells composed of several symmetry-equivalent domains without a simple relation to the substrate. This work presents ProLEED Studio software, built to provide simple, intuitive and precise modeling of low-energy electron diffraction patterns. The interactive graphical user interface allows real-time modeling of experimental diffraction patterns, change of depicted diffraction spot intensities, visualization of different diffraction domains, and manipulation of any lattice points or diffraction spots. The visualization of unit cells, lattice vectors, grids and scale bars as well as the possibility of exporting ready-to-publish models in bitmap and vector formats significantly simplifies the modeling process and publishing of results.

Robust Dipolar Layers between Organic Semiconductors and Silver for Energy-Level Alignment

“…Diffraction patterns were obtained from a 15 × 10 μm 2 surface area, and microdiffraction was done with a 185 nm e-beam spot size on the sample. The diffraction patterns were modeled using ProLEED Studio; a local congruence approach , was employed to match the modeled diffraction patterns with the measured ones. XPS was performed on a Specs system utilizing a Phoibos 150 spectrometer.…”