1. F. C. Krebs, Solar Energy Mater. Sol. Cells 93, 394 (2009).
2. P. A. Troshin, R. N. Lyubovskaya, and V. F. Razumov, Ross. Nanotekhnol. Obzory 3 (5–6), 56 (2008).
3. H. Hoppe, N. S. Sariciftci, and D. Meissner, Mol. Cryst. Liq. Cryst. 385, 113 (2002).
4. W. J. Yoon and P. R. Berger, Appl. Phys. Lett. 92, 01306 (2008).
5. V. M. Zolotarev, V. N. Morozov, and E. V. Smirnov, Optical Constants of Natural and Technical Media (Khimiya, Leningrad, 1984) [in Russian].