1. M. Kemell, M. Ritala, and M. Leskela, Crit. Rev. Solid State Mater. Sci. 30, 1 (2005).
2. J. C. Chang, C. C. Chuang, J. W. Guo, et al., Nanosci. Nanotechnol. Lett. 3, 200 (2011).
3. D. Pathak, D. Bedi, and D. Kaur, Optoelectron. Adv. Mater.–Rapid Commun., 657 (2010).
4. D. Pathak, R. K. Bedi, et al., Mater. Manufact. Proces., 1012 (2010).
5. R. Gay, M. Dietrich, C. Fredric, et al., in Proceedings of the 12th European Photovoltaic Solar Energy Conference (1994), p. 935.