Photoemission electron microscopy of diindenoperylene thin films

Abstract

We present the results of photoemission electron microscopy investigations of diindenoperylene thin films deposited by organic molecular-beam deposition on polycrystalline gold at room temperature. Our findings revealed the existence of a different molecular orientation, besides the already known and phases, characterized by an intermediate tilt angle. In thicker film regions, the energy of the films is minimized by a molecular arrangement that has an asymptotic tendency to the upright standing position. We have interpreted our results by using basic concepts in terms of relative strength of the substrate-molecule and moleculemolecule interactions.

Indexing grazing-incidence X-ray diffraction patterns of thin films: lattices of higher symmetry

“…In Table 3 we summarize the various results. Comparing these cells highlights that DIP grows on HOPG in a previously unknown polymorph, most likely in the same polymorph which has been referred to as phase in the literature before (Dü rr et al, 2003;Kowarik et al, 2006;Casu et al, 2008).…”

Island shapes and aggregation steered by the geometry of the substrate lattice

“…DIP is a perylene-based molecule that shows a high hole mobility in thin films, good film forming properties, and thermal stability. [7][8][9] It is a good candidate as a donor material in organic photovoltaic cells. 10 The measurements were performed with the SMART (Spectro-Microscope with Aberration correction for many Relevant Techniques), 11,12 an aberration-corrected spectromicroscope, installed at the UE49-PGM-b-SMART at BESSY (Berlin, Germany).…”

Locally Resolved Core‐hole Screening, Molecular Orientation, and Morphology in Thin Films of Diindenoperylene Deposited on Au(111) Single Crystals

“…Diindenoperylene (DIP, C 32 H 16 , Figure ) is a perylene‐based molecule that already shows a high hole mobility in thin films, good film forming properties, and thermal stability 7–12. All these aspects suggest that it is a very promising molecule for electronic applications.…”