1. Efficient thin-film solar cells prepared by a sequential process
2. V. Probst, F. Karg, J. Rimmasch, W. Riedl, W. Stetter, H. Harms, O. Eibl, Materials Research Sociey Symposium Proceedings, Pittsburgh, PA, Vol. 426, 1996, pp. 165–176.
3. J. Klaer, J. Bruns, R. Henninger, K. Töpper, R. Klenk, K. Ellmer, D. Bräunig, A tolerant two-step process for efficient CuInS2 solar cells, In: J. Schmid et al. (Eds.), Second World Conference Photovoltaic Solar Energy Conversion, Vienna 1998, 537–540.
4. Photoluminescence of CuInS2 thin films and solar cells modified by postdeposition treatments;Töpper;Appl. Phys. Lett.,1997
5. J. Kneisel, Admittanzspektroskopie an CuInS2-Dünnschichtsolarzellen, Diploma Thesis, Technical University Berlin, Germany, 1999