Dresden 2011 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 42: Poster I: Progress in Micro- and Nanopatterning: Techniques and Applications (jointly with O); Spins in Organic Materials; Ion Interactions with Nano Scale Materials; Organic Electronics and Photovoltaics; Plasmonics and Nanophotonics (jointly with HL and O); High-k and Low-k Dielectrics (jointly with DF); Organic Thin Films; Nanoengineered Thin Films; Layer Deposition Processes; Layer Properties: Electrical, Optical, and Mechanical Properties; Thin Film Characterisation: Structure Analysis and Composition; Application of Thin Films
DS 42.35: Poster
Mittwoch, 16. März 2011, 15:00–17:30, P1
Inkjet printing of organic layers on nano- and microstructured flexible substrates for organic electronic devices — •Marcel Schmidt1, Peter Lewer1, Kerstin Schulze1, Silvia Janietz1, Felix Stelzl2, Chegnui Bekeny2, and Uli Würfel2 — 1Fraunhofer Institute for Applied Polymer Research, Geiselbergstr. 69, 14476 Potsdam-Golm, Germany — 2Fraunhofer Institute for Solar Energy Systems, Heidenhofstr. 2, 79110 Freiburg, Germany
Inkjet printing as deposition method for organic materials in electronic devices promises to be a low-cost production technology in future. The advantage of this technique is the ability to deposit a small amount of material on defined areas on substrates, e.g. for the preparation of organic field effect transistors (OFETs) or organic solar cells (OSCs). As a special application the use of 3D-nanostructured electrodes on flexible substrates as a high voltage source could be already demonstrated [Adv. Mater. 20, 4055]. The deposition of material layers is especially influenced by the capillary forces of the electrode structures and by the formation of inhomogeneous layers. Here, we present our results on the development of an inkjet printing process for semiconductor materials on nano- and microstructured substrates. The capillary forces resulting from the structure of the substrates as well as the solvents of the ink were examined for the development of the printing process. The prepared layers were analysed using atomic force microscopy (AFM) and scanning electron microscopy (SEM). The fabrication of smooth layers within the microstructure will be demonstrated as well as first results of photovoltaic cells on nanostructured substrates.