[1] M. Ni, M. K. H. Leung, D. Y. C. Leung, and K. Sumathy, Renew. Sust. Energ. Rev. 11, 401 (2007).
[2] Y. Wu, X. Wang, and C. Ma, Acta Opt. Sin. (in Chinese) 28, 2408 (2008).
[3] Z. Zou, J. Ye, K. Sayama, and H. Arakawa, Nature 414, 625 (2001).
[4] Z. Zou, J. Ye, K. Sayama, and H. Arakawa, J. Photochemistry and Photobiology A 148, 65 (2002).
[5] X. Zhang, Z. Ai, F. Jia, L. Zhang, X. Fan, and Z. Zou, Mater. Chem. Phys. 103, 162 (2007).
[6] F. E. Osterloh, Chem. Mater. 20, 35 (2007).
[7] D. Wang, Z. Zou, and J. Ye, Chem. Mater. 17, 3255 (2005).
[8] W. K. Chang, Y. S. Wu, C. Y. Tzeng, and A. Y. Lin, J. Alloys Compounds 478, 341 (2009).
[9] J. Yin, Z. Zou, and J. Ye, J. Mater. Res. 17, 2201 (2002).
[10] S. Sanguinetti, T. Mano, M. Oshima, T. Tateno, M. Wakaki, and N. Koguchi, Appl. Phys. Lett. 81, 3067 (2002).
[11] P. Escribano, M. Marchal, M. Luisa Sanju′an, P. Alonso-Gutierrez, B. Julian, and E. Cordoncillo, J. Solid State Chem. 178, 1978 (2005).
[12] F. Clabau, X. Rocquefelte, S. Jobic, P. Deniard, M. H. Whangbo, A. Garcia, and T. Le Mercier, Solid State Sci. 9, 608 (2007).
[13] F. Leiter, H. Alves, D. Pfisterer, N. G. Romanov, D. M. Hofmann, and B. K. Meyer, Physica B 340-342, 201 (2003).
[14] P. Klason, T. Moe B rseth, Q. X. Zhao, B. G. Svensson, A. Y. Kuznetsov, P. J. Bergman, and M. Willander, Solid State Commun. 145, 321 (2008).
[15] S. Shi and T. Huang, Chin. Opt. Lett. 8, 221 (2010).
[16] T. Huang, S. Zhou, H. Teng, and H. Lin, Acta Opt. Sin. (in Chinese) 28, 1420 (2008).
[17] A. Zubiaga, J. A. Garcia, F. Plazaola, F. Tuomisto, K. Saarinen, J. Z. Perez, and V. M. Sanjose, J. Appl. Phys. 99, 053516 (2006).
[18] M. Leroux, N. Grandjean, B. Beaumont, G. Nataf, F. Semond, J. Massies, and P. Gibart, J. Appl. Phys. 86, 3721 (1999).