Berlin 2012 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 44: Poster IV: Thin film photovoltaics; Organic electronics and photovoltaics (jointly with CPP, HL, O); Organic thin films; Trends in atomic layer deposition (Focused session)

DS 44.36: Poster

Freitag, 30. März 2012, 09:30–12:00, Poster E

A multitechnique investigation of substituted pentacene nanorods — •Sabine-Antonia Savu¹, Simon Schundelmaier¹, Sabine Abb¹, Christina Tönshoff², Holger F. Bettinger², Maria Benedetta Casu¹, and Thomas Chassé¹ — ¹Institut für Physikalische und Theoretische Chemie, Universität Tübingen, Tübingen, Deutschland — ²Institut für Organische Chemie, Universität Tübingen, Tübingen, Deutschland

We report our investigation on nanorods of two newly synthesized substituted pentacenes by using X-ray photoemission spectroscopy (XPS), near edge X-ray absorption fine structure (NEXAFS) spectroscopy, and atomic force microscopy (AFM). The nanorods were deposited on Au(111). We have analyzed the photoemission spectra in detail by using a fitting procedure. XPS thickness dependent spectra show a different screening of the core-hole at the interface, while NEXAFS investigations suggest a molecular arrangement similar to what reported for pentacene thin films. In addition, the morphology of the nanorods has been investigated by using AFM, evaluating the nanorod characteristics also from a statistical point of view.