SKM 2023 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 17: Poster Session I

CPP 17.53: Poster

Monday, March 27, 2023, 18:00–20:00, P3

Characterization of pure DbSeQ thin films and their multilayers with different semiconductor materials — •Anton Pylypenko, Elena Chulanova, Alexander Gerlach, and Frank Schreiber — Universität Tübingen, Auf der Morgenstelle 10, 72076 Tübingen, Germany

Organic semiconductor thin films are widely used in different areas of science and industry, especially for the manufacturing of organic optoelectronic devices. Bilayers of organic semiconductors are of high interest for research due to the possibility of increasing the advantages of blended materials [1]. Prospective candidates for these applications are derivatives of 2,1,3-benzothiadiazole, especially Dibenzoselenadiazoloquinoxoline (DbSeQ). The heavy atom has a strong impact on the spin-orbit coupling and thus the optical properties of the film. Understanding and investigating mechanisms of growth behavior is a key requirement for optimizing films.

We have investigated thin film growth and templating effects for various bilayers like DbSeQ:PIC or DbSeQ:DIP. The binary thin films are prepared by consistent evaporation of DbSeQ, DIP, and PIC on weakly interacting substrates under ultra-high vacuum conditions. Using ex-situ AFM, UV-VIS, and photoluminescence spectroscopies, X-ray reflectometry, and grazing-incidence wide-angle X-ray scattering, we have observed the morphology, structure, and crystallinity of bilayer films.

[1] A. Hinderhofer, F.Schreiber Chem Phys Chem (2012) 13 628