[1] [1] O’Regan B, Grtzel M. Nature, 1991, 353: 737.

[2] [2] Wang P, Grtzel M. Nature, 2003, 6: 402.

[3] [3] Wang Q, Ito S, Grtzel M, et al. J. Phys. Chem. B, 2006, 110: 25210.

[4] [4] Martinson A B F, Goes M S, Fabregat-Santiago F, et al. J. Phys. Chem. A, 2009, 113: 4015.

[5] [5] Prasittichai C, Joseph T H. J. Phys. Chem. Lett., 2010, 1: 1611.

[6] [6] Meng Q B, Takahashi K, Zhang X T, et al. Langmuir, 2003, 19: 3572.

[7] [7] Senevirathnaa M K I, Pitigala P K D D P, Premalal E V A, et al. Solar Energy Materials & Solar Cells, 2007, 91: 544.

[8] [8] Zhang X T, Liu H W, Taguchi T, et al. Solar Energy Materials & Solar Cells, 2004, 81: 197.

[9] [9] Ott A W, Klaus J W, Johnson J W, et al. Thin Solid Films, 1997, 292: 135.

[10] [10] Puurunen R L, Besling W F A, Richard O, et al. J. Appl. Phys., 2004, 96: 4878.

[11] [11] Ha S C, Choi E, Kim S H, et al. Thin Solid Films, 2005, 476: 252.

[12] [12] Palomares E, Clifford J N, Haque S A, et al. J. Am. Chem. Soc., 2003, 475.

[13] [13] Liu Z, Pan K, Liu M, et al. Electrochim. Acta, 2005, 50: 2583.