Parts | Days | Selection | Search | Updates | Downloads | Help

DS: Fachverband Dünne Schichten

DS 8: Thin film photovoltaics: oxides and nanostructures

DS 8.2: Talk

Monday, March 26, 2012, 16:45–17:00, H 2032

Combination of Zinc Phthalocyanines and Zinc Oxide for Hybrid Solar Cells — •Michael Kozlik, Steffen Milz, Roman Forker, Alina Donat, Sören Paulke, Carsten Ronning, and Torsten Fritz — University of Jena, Institute of Solid State Physics, Max-Wien-Platz 1, 07743 Jena, Germany

Zinc phthalocyanine (ZnPc) is an organic molecule with high absorbance [1]. In combination with zinc oxide (ZnO) the interface forms a p-n-junction [2]. Therefore, the materials can be used in hybrid solar cells, i.e., photovoltaic devices made of organic and inorganic materials in order to utilize the advantages of the two material classes: high absorbance and good conductivity, respectively [3]. In our work, we investigate the planar sandwich setup and nanostructured devices, the latter consisting of ZnO nanowires covered with ZnPc. The interface between the two materials is analyzed by scanning electron microscopy (SEM), together with energy dispersive X-ray spectroscopy (EDX) and photo electron spectroscopy (PES) to characterize the electronic properties. The results of UV-Vis spectroscopy and external quantum efficiency (EQE) measurements highlight the generation of excitons in ZnPc and link these with the photo current in the visible range.

REFERENCES

[1] N. Papageorgiou et al., Prog. Surf. Sci. 77 (2004) 139.

[2] C. Ingrosso et al., Electrochim. Acta 51 (2006) 5120.

[3] S. Günes et al., Inorg. Chim. Acta 361 (2008) 581.