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Helga Wietasch

HW
Alumnus

Publications in the Thelakkat group

[1] Yum, J.H., Moon, S.J., Karthikeyan, C.S., Wietasch, H., Thelakkat, M., Zakeeruddin, S.M., Nazeeruddin, M. & Grätzel, M. Heteroleptic ruthenium complex containing substituted triphenylamine hole-transport unit as sensitizer for stable dye-sensitized solar cell. Nano Energy, 1(1):6-12, 2012.
[2] Bandara, J., Shankar, K., Basham, J., Wietasch, H., Paulose, M., Varghese, O., Grimes, C. & Thelakkat, M. Integration of TiO2 nanotube arrays into solid-state dye-sensitized solar cells. Eur. Phys. J. Appl. Phys., 53:20601, 2011.
[3] Shankar, K., Bandara, J., Paulose, M., Wietasch, H., Varghese, O., Mor, G., LaTempa, T., Thelakkat, M. & Grimes, C. Highly Efficient Solar Cells using TiO2 Nanotube Arrays Sensitized with a Donor-Antenna Dye. Nano Letters, 8:1654-1659, 2008.
[4] Bauer, P., Wietasch, H., Lindner, S. & Thelakkat, M. Synthesis and Characterization of Donor-Bridge-Acceptor Molecule Containing Tetraphenylbenzidine and Perylene bisimide. Chem. Mater., 19:88-94, 2007.
[5] Handa, S., Wietasch, H., Thelakkat, M., Durrant, J. & Haque, S. Reducing charge recombination losses in solid state dye sensitized solar cells: the use of donor-acceptor sensitizer dyes. Chem. Comm., 17:1725-1727, 2007.
[6] Karthikeyan, C., 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(5):432-439, 2007., (Selected Papers from the European Conference on Hybrid and Organic Solar Cells -- \ECHOS\ '06European Conference on Hybrid and Organic Solar Cells).
[7] Karthikeyan, C., Wietasch, H. & Thelakkat, M. Highly Efficient Solid-State Dye-Sensitized TiO2 Solar Cells Using Donor Antenna Dyes Capable of Multistep Charge Transfer Cascade. Adv. Mater., 19:1091-1095, 2007.
[8] Peng, B., Peter, K., Wietasch, H. & Thelakkat, M. Interface Modifications in Solid-State Dye-Sensitized TiO2 Solar Cells. Proc. of SPIE, 5215:60-70, 2004.
[9] Peter, K., Wietasch, H., Peng, B. & Thelakkat, M. Dual-functional materials for interface modifications in solid-state dye-sensitised TiO2 solar cells. Applied Physics A, 79(1):65-71, Springer-Verlag, 2004.