Regensburg 2007 – scientific programme

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SYOE: Symposium Organic Thin Film Electronics: From Molecular Contacts to Devices

SYOE 8: Poster Session SYOE

SYOE 8.57: Poster

Tuesday, March 27, 2007, 18:00–20:00, Poster B

Hybrid Solar Cells based on Crystalline TiO2 Nanoparticles — •Beate Reinhold^1,2, Markus Niederberger¹, Dieter Neher², and Markus Antonietti¹ — ¹Max Planck Institute of Colloids and Interfaces, Colloid Department, Am Mühlenberg 1, 14476 Potsdam-Golm — ²University of Potsdam, Institute of Physics, Am Neuen Palais 10, 14469 Potsdam, Germany

Using a nonaqueous route, crystalline TiO2 nanoparticles with a diameter of ca. 5 nm were synthesized [1]. These nanoparticles were used as electron-transporting components in hybrid solar cells. Two device concepts were tested. In one case, the TiO2 particles were blended together with the electron accepting polymer poly(p-phenylene vinylene). In the second case, the nanoparticles were coated on top of the pure polymer to form a dense electron-transporting layer. The photovoltaic properties of the layers prepared with different TiO2 content, layer thickness and annealing temperature are presented and discussed in relation to the optical properties.

[1] M. Niederberger, G. Garnweitner, F. Krumeich, R. Nesper, H. Cölfen, M. Antonietti, Chem. Mater. 16 (2004) 1202.