Berlin 2008 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 41: Organic semiconductors

HL 41.4: Talk

Thursday, February 28, 2008, 15:45–16:00, ER 270

Investigation of novel organic n-type semiconductors with respect to absorption, charge carrier generation and mobility — •Moritz Liedtke^1,2, Johannes Krantz¹, Andreas Sperrlich¹, Björn Titze¹, Maria Hammer¹, Carsten Deibel¹, Vladimir Dyakonov^1,2, and Martin Baumgarten³ — ¹Experimental Physics VI, Physical Institute, Julius-Maximilians-University of Würzburg, Am Hubland, D-97074 Würzburg — ²The Bavarian Center for Applied Energy Research (ZAE Bayern), Am Hubland, D-97074 Würzburg — ³Max Planck Institute for Polymer Research, D-55128 Mainz

Novel organic n-type semiconductors as acceptors for applications in organic semiconducting devices such as solar cells are investigated. As reference materials, we used the donor poly(3-hexylthiophene) (P3HT) and the commonly used [6,6] phenyl-C61-butyric acid methyl ester (PCBM) as acceptor. We studied the materials and their composites in view of light absorption, photoluminescence quenching, electron spin resonance and field-effect mobillity measurements. Thus we obtained information on charge carrier generation, the spin state of excitations and the charge carrier mobility.