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Fakultät für Biologie, Chemie und Geowissenschaften

Makromolekulare Chemie I: Prof. Hans-Werner Schmidt

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Organische Solarzellen
Ansprechpartner: Mukundan Thelakkat, Hans-Werner Schmidt

Querschnitt durch eine farbstoffsensibilisierte TiO2-Solarzelle




Auf dem Gebiet der Solarzellen werden sowohl anorganisch-organische Hybridsysteme auf Titandioxid Basis (Grätzel-Zelle) als auch vollständig aus organischen Materialien aufgebaute Solarzellen untersucht.

Vollständige Möglichkeiten zur Präparation und Charakterisierung von Solarzellen sind am Lehrstuhl vorhanden.

Bei der Grätzel-Zelle liegen unsere Schwerpunkte bei der Synthese neuer Farbstoffe, bei festen Lochtransportschichten auf Basis aromatischer Amine und beim Einsatz gelierter Elektrolyte als Transportschicht.

Bei organischen Solarzellen beschäftigen wir uns mit der Synthese und der Untersuchung vollfunktionalisierter Blockcopolymere, bei denen absorbierende, elektronen- und lochtransportierende Einheiten in einem Blockcopolymer vereinigt sind.

Auf dem Gebiet der Solarzellen kooperieren wir eng mit Prof. Michael Grätzel (Photonics & Interfaces Laboratory, EPFL Lausanne) und Prof. James Durrant (Electronic Materials, Imperial College, London)


Publikationsliste

Hüttner, S.; Sommer, M.; Thelakkat, M.: n-type organic field effect transistors from perylene bisimide block copolymers and homopolymers, Applied Physics Letters, 92, 093302/1-3 (2008) -- DOI: 10.1063/1.2885712 -- Details
Snaith, H.J.; Karthikeyan, C.S.; Petrozza, A.; Teuscher, J.; Moser, J.-E.; Nazeeruddin, M.K.; Thelakkat, M.; Grätzel, M.: High extinction coefficient “antenna” dye in solid-state dye-sensitised solar cells: a photo-physical and electronic study, Journal of Physical Chemistry C, 112, 7562–7566 (2008) -- DOI: 10.1021/jp801714u -- Details
Shankar, K.; Bandara, J.; Paulose, M.; Wietasch, H.; Varghese, O.K.; Mor, G.K.; LaTempa, T.J.; Thelakkat, M.; Grimes, C.A.: Highly Efficient Solar Cells using TiO2 Nanotube Arrays Sensitized with a Donor-Antenna Dye, Nano Letters 8, 1654-1659 (2008)
Karthikeyan, C.S.; Thelakkat, M.: Key aspects of individual layers in solid-state dye-sensitized solar cells and novel concepts to improve their performance, Inorganica Chimica Acta, 361, 635–655 (2008)
Karthikeyan, C.S.; Peter, K.; Wietasch, H.; Thelakkat, M.: Highly Efficient Solid-State Dye-Sensitized TiO2 Solar Cells via Control of Retardation of Recombination Using Novel Donor Antenna Dyes, Solar Energy Materials and Solar Cells 91, 432-439 (2007) -- DOI: 10.1016/j.solmat.2006.10.006
Lindner, S.; Kaufmann, N.; Thelakkat, M.: Nanostructured Semiconductor Block Copolymers: p-p Stacking, Optical and Electrochemical Properties, Organic Electronics, 8, 69-75 (2007)
Sommer, M.; Lindner, S.; Thelakkat, M.: Microphase-Separated Donor- Acceptor Diblock Copolymers: Influence of HOMO Energy Levels and Morphology on Polymer Solar Cells, Advanced Functional Materials, 17(9), 1493-1500 (2007) -- DOI: 10.1002/adfm.200600634 -- Details
Karthikeyan, C.S.; Wietasch, H.; Thelakkat, M.: Highly Efficient Solid-State Dye-Sensitized TiO2 Solar Cells Using Donor Antenna Dyes Capable of Multistep Charge Transfer Cascade, Advanced Materials, 19(8), 1091-1095 (2007)
Bauer, P.; Wietasch, H.; Lindner, S.; Thelakkat, M.: Synthesis and Characterization of Donor-Bridge-Acceptor Molecule Containing Tetraphenylbenzidine and Perylene bisimide, Chemistry of Materials, 19, 88-94 (2007)
Alagiriswamy, A.A.; Jäger, C.; Haarer, D.; Thelakkat, M.; Knoll, A.; Krausch, G.: Local potential distribution of macrophase separated polymer blend domains, Journal of Physics D: Applied Physics, 40(16), 4855-4865 (2007) -- Details
Handa, S.; Wietasch, H.; Thelakkat, M.; Durrant, J.R.; Haque, S.A.: Reducing charge recombination losses in solid state dye sensitized solar cells: the use of donor-acceptor sensitizer dyes, Chemical Communications, 17, 1725-1727 (2007)
Lindner, S.; Hüttner, S.; Chiche, A.; Thelakkat, M.; Krausch, G.: Charge Separation at Self-assembled Nanostructured Bulk Interface in Block Copolymers, Angewandte Chemie Int. Ed. 45(20), 3364-3368 (2006)
Karthikeyan, C.S.; Thelakkat, M.; Willert-Porada, M.: Dye Sensitized Solar Cells: A Comparative Study Using Different Nanocrystalline-Titania, Ceramic Transactions, 172, 115 (2006)
Perez Leon, C.; Kador, L.; Peng, B.; Thelakkat, M.: Characterization of the Adsorption of Ru-bpy Dyes on Mesoporous TiO2 Films with UV-Vis, Raman, and FTIR Spectroscopies, The Journal of Physical Chemistry B 110(17), 8723-8730 (2006)
Karthikeyan, C.S.; Thelakkat, M.; Willert-Porada, M.: Different Mesoporous Titania Films for Solid State Dye Sensitized Solar Cells, Thin Solid Films, 511-512, 187-194 (2006)
Sommer, M.; Thelakkat, M.: Synthesis, Characterization and Application of Donor-Acceptor Block Copolymers in Nanostructured Bulk Heterojunction Solar Cells, The European Physics Journal - Applied Physics, 36, 245-249 (2006) -- Details
Handa, S.; Haque, S.A.; Peter, K.; Palomares, E.; Thelakkat, M.; Durrant, J.R.: Supermolecular control of charge transfer in dye-sensitized nanocrystalline TiO2 films: Towards a quantitative structure-function relationship, Angew. Chem. Int. Ed. 44, 5740-5744 (2005)
Pérez León, C.; Kador, L.; Peng, B.; Thelakkat, M.: Influence of the Solvent on the Surface-Enhanced Raman Spectra of Ruthenium(II) Bipyridyl Complexes, Journal of Physical Chemistry C, 109, 5783-5789 (2005) -- DOI: 10.1021/jp044946x
Handa, S.; Haque, S.A.; Peter, K.; Palomares, E.; Thelakkat, M.; Durrant, J.R.: Supermolecular control of charge transfer in dye-sensitized nanocrystalline TiO2 films: Towards a quantitative structure-function relationship, Nature Materials 4, 723-724 (2005)
Kisselev, R.; Thelakkat, M.: Synthesis and Characterization of Poly(triarylamine)s Containing Isothianaphthene Moieties, Macromolecules, 37, 8951-8958 (2004)
Peter, K.; Wietasch, H.; Peng, B.; Thelakkat, M.: Dual functional materials for interface modifications in solid-state dye-sensitized TiO2 solar cells, Applied Physics A: Materials Science and Processing 79, 6571 (2004)
Lindner, S.; Thelakkat, M.: Nanostructured n-type Organic Semiconductor in a p-type Matrix via Self-Assembly of Block Copolymers, Macromolecules, 37, 8832-8835 (2004)
Thelakkat, M.; Schmitz, C.; Neuber, C.; Schmidt, H.-W.: Materials screening and combinatorial development of thin film multilayer electro-optical devices, Macromolecular Rapid Communications, 25, 204-223 (2004)
Jäger, C.; Haarer, D.; Peng, B.; Thelakkat, M.: The influence of the Time-of-flight mobility on the efficiency of solid-state dye-sensitized TiO2 solar cells, Applied Physics Letters, 85(25), 6185-6187 (2004)
Hänsel, H.; Zettl, H.; Krausch, G.; Kisselev, R.; Thelakkat, M.; Schmidt, H.-W.: Optical and Electronic Contributions in Double-Heterojunction Organic Thin-Film Solar Cells, Advanced Materials, 24, 2056-2060 (2003) -- DOI: 10.1002/adma.200305274
Thelakkat, M.; Schmitz, C.; Schmidt, H.-W.: Fully Vapor-Deposited Thin-Layer Titanium Dioxide Solar Cells, Advanced Materials, 14(8), 577-581 (2002)
Hänsel, H.; Zettl, H.; Krausch, G.; Schmitz, C.; Kisselev, R.; Thelakkat, M.; Schmidt, H.-W.: Combinatorial study of the long-term stability of organic thin-film solar cells, Applied Physics Letters, 81(11), 2106-2108 (2002) -- DOI: 10.1063/1.1506203

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