Berlin 2015 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 39: Poster Session II

DS 39.17: Poster

Donnerstag, 19. März 2015, 16:00–18:30, Poster F

Copper Phthalocyanine as Contact Primer for Organic Semiconductor Films on Metal Substrates — •Alexander Mänz and Gregor Witte — Molekulare Festkörperphysik, Fachbereich Physik, Philipps-Universität Marburg, Renthof 7, 35032 Marburg

Organic self assembled monolayers can be utilized as contact primer for the growth of organic semiconductors on metal surfaces. In order to avoid involved charge transport limitations of SAMs, flat lying PAHs such as Phthalocyanines can be used alternatively. In our study we exemplarily used Copper Phthalocyanine (CuPc) as contact primer for the growth of the organic semiconductor Pentacene (PEN) on coinage metals. The initial stage of growth was investigated by means of AFM and NEXAFS, which give insight into the morphology and the molecular orientation of submonolayer coverages. Additionally, films with thicknesses up to 30 nm were analyzed by means of XRD. In all cases we observed PEN to grow in upright orientation, adopting the thin film polymorph as known for PEN on inert substrates. This observation is in contrast to the thin film growth of other planar PAHs like PTCDA on CuPc monolayers.