Berlin 2008 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 22: Hybrid systems

HL 22.4: Talk

Tuesday, February 26, 2008, 10:15–10:30, EW 201

Comparison of Charge Transport in organic P3HT and inorganic Al-doped zinc oxide nanoparticles — •Maria Hammer¹, Daniel Rauh², Ingo Riedel², Carsten Deibel¹, and Vladimir Dyakonov^1,2 — ¹Experimental Physics VI, Physical Institute, Julius-Maximilians-University of Würzburg, Am Hubland, D-97074 Würzburg — ²ZAE Bayern, Div. Functional Materials for Energy Technology, Am Hubland, D-97074 Würzburg, Germany

The preparation of electronic devices from solution receives a lot of attention nowadays due to the low cost potential. One approach is an organic--inorganic hybrid system for applications in solar cells. For a deeper understanding of these material combinations, we examine the charge transport in the organic semiconductor poly(3-hexylthiophene) and the inorganic Al-doped zinc oxide nanoparticles, respectively. We present the charge carrier mobility in dependence of the charge carrier densities and temperature measured on field effect devices. Contact effects due to the workfunction of the injecting electrodes are taken into account. We survey the properties of the transport in these disordered systems, organic and inorganic, in the high carrier concentration regime. Those will be discussed with respect to the underlying transport models.