[1] J. D. Saunderson, R. Swanepoel and M. J. van Staden, Sol. Energy Mater. Sol. Cells 51, 425 (1998).
[2] P. Pernet, M. Goetz, X. Niquille, D. Fischer, and A. Shah, in Proceedings of 2nd World Conference on PV Energy Conversion 976 (1998).
[3] S. Vaccaro, P. Torres, and J. R. Mosig, Microwave Opt. Tech. Lett. 29, 11 (2001).
[4] H. Cai, D. Zhang, and K. Feng, Acta Energiae Solaris Sin. 27, 687 (2006).
[5] C. Lee, A. Park, and Y. J. Cho, Ceram. Int. 34, 1093 (2008).
[6] J. D. Saunderson, M. J. Witcomb, and R. Swanepoel, J. Mater. Sci. 36, 1563 (2001).
[7] D. Wan, F. Huang, X. Mou, Y. Wang, and F. Xu, ACS Appl. Mater. Interf. 2, 2147 (2010).
[8] K. Ottosson, "The role of i-ZnO for shunt prevention in Cu(In, Ga)Se2-based solar cells", PhD. Thesis (Uppsala universitet, 2006).
[9] H. Cai, D. Zhang, Y. Xue, and K. Tao, Sol. Energy Mater. Sol. Cells 93, 1959 (2009).
[10] Y. J. Kim, C. H. Lee, Y. J. Hong, G. Ch. Yi, S. S. Kim, and H. Cheong, Appl. Phys. Lett. 89, 163128 (2006).
[11] X. Li, A. E. Sally, S. Limpijumnong, S. B. Zhang, S. H. Wei, T. M. Barnes, T. J. Coutts, and R. Noufi, J. Vac. Sci. Technol. A 24, 1213 (2006).
[12] S. W. Kim, S. Z. Fujita, M. S. Yi, and D. H. Yoon, Appl. Phys. Lett. 88, 253114 (2006).
[13] L. H. Xu, H. Shen, X. Y. Li, and R. H. Zhu, Chin. Opt. Lett. 7, 953 (2009).
[14] S. L. Shi and T. C. Huang, Chin. Opt. Lett. 8, 683 (2010).
[15] J. Ch. Lee and K. H. Kang, Sol. Energy Mater. Sol. Cells 64, 185 (2000).
[16] W. N. Shafarman and R. Klenk, J. Appl. Phys. 79, 7324 (1996).
[17] J. Hedstrom, H. Ohlsen, M. Bodegard, A. Kylner, and L. Stolt, in Proceeding of 23rd IEEE Photovolt. Spec. Conf. 364 (1993).
[18] W. E. Devaney, W. S. Chen, J. M. Stewart, and R. A. Mickelsen, IEEE Trans. Electron Dev. 37, 428 (1990).
[19] M. Kemell and M. Ritala, Crit. Rev. Solid State Mater. Sci. 30, 1 (2005).
[20] T. Nakada and M. Mizutani, Jpn. J. Appl. Phys. 41, L165 (2002).
[21] K. Kushiya and T. Nii, Jpn. J. Appl. Phys. 35, 4383 (1996).