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Energies 2010, 3(3), 301-312; doi:10.3390/en3030301

Comparison of Hybrid Blends for Solar Cell Application

1 Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany 2 Institute for Physical Chemistry, Johannes Gutenberg University, Jakob-Welder-Weg 10, 55099 Mainz, Germany 3 Institute for Inorganic Chemistry and Analytical Chemistry, Johannes Gutenberg University, Duisbergweg 10-14, 55099 Mainz, Germany 4 Institute for Organic Chemistry, Johannes Gutenberg University, Duisbergweg 10-14, 55099 Mainz, Germany 5 School of Chemical and Biological Engineering, WCU program of Chemical Convergence for Energy & Environment (C2E2), College of Engineering, Seoul National University, 151-744 Seoul, Korea
* Author to whom correspondence should be addressed.
Received: 9 December 2009 / Revised: 22 January 2010 / Accepted: 29 January 2010 / Published: 5 March 2010
(This article belongs to the Special Issue Solar Cells)
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In blended hybrid systems distinct micro- or nanostructured materials can be formed by phase separation. Network structures of particles or rods in a polymer matrix can be developed via self-assembly. We use this blending approach to compare active materials for application in solar cell devices. Blends were fabricated from either poly(hexylthiophene) P3HT or poly(triphenylamine) PTPA mixed with nanocrystalline TiO2 rods. In this manner, we compare two different hole conducting polymers in their performance in photovoltaic devices, while experimental conditions are kept identical. We find that the choice of solvent and photovoltaic characterization conducted in inert atmosphere is of importance for blends prepared from P3HT/TiO2 blends, but not for PTPA/TiO2 blends. Even though prepared with the same TiO2 rods, solar cells prepared from PTPA blends showed an enhanced efficiency when measured under ambient conditions. Furthermore, the PTPA/TiO2 showed higher long-term stability.
Keywords: hybrid solar cell; P3HT; PTPA; ambient condition hybrid solar cell; P3HT; PTPA; ambient condition
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Lechmann, M.C.; Koll, D.; Kessler, D.; Theato, P.; Tremel, W.; Gutmann, J.S. Comparison of Hybrid Blends for Solar Cell Application. Energies 2010, 3, 301-312.

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