[1] [1] O′REGAN B, GRATZEL M. A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films［J］. Nature, 1991, 353: 737-740.

[2] [2] GRATZEL M. Engineering of a novel ruthenium sensitizer and its application in dye-sensitized solar cells for conversion of sunlight into electricity ［J］. Inorganic Materials, 2005, 44(2): 178-180.

[3] [3] GRATZEL M. Solar energy conversion by dye-sensitized photovoltaic cells［J］. Inorganic Materials, 2005, 44(20): 6841-6851.

[4] [4] WANG Yu-qiao, WANG Pan-pan, LU Jing, et al. Dye-sensitized solar cells based on MWCNT/TiO2 counter electrode and thiolate/disulfide non-lodine redox couple［J］. Acta Physica-Chemical Sinica, 2015, 31(3): 448-456.

[5] [5] QI Tao, ZHANG Yong-chao, SHI Hai-ying, et al. Preparation of SnO2-TiO2 photoanode and its effect on the property of DSSC［J］. Journal of Synthetic Crystals, 2015, 44(10): 2848-2851.

[6] [6] WANG Y F, ZHAO W X, LI X F, et al. Engineered interfacial and configuration design of double layered SnO2@TiO2-ZnO nanoplates ternary heterostructures for efficient dye-sensitized solar cells［J］. Electrochimica Acta, 2015, 151: 399-406.

[7] [7] LI C T, LEE C P, LI Y Y, et al. A composite film of TiS2/PEDOT:PSS as the electrocatalyst for the counter electrode in dye-sensitized solar cells［J］. Journal of Materials Chemistry A, 2013, 1(47): 14888-14896.

[8] [8] CHOU C S, KUO Y T, JHANG J W, et al. Bi-functional lithium doping in dye-sensitized solar cells［J］. Solar Energy, 2014, 109(1): 111-117.

[9] [9] RHO W Y, CHOI J W, LEE H Y, et al. Dye-sensitized solar cells with silica-coated quantum dot-embedded nanoparticles used as a light-harvesting layer［J］. New Journal of Chemistry, 2014, 38(38): 910-913.

[10] [10] NIE Ming-qi, HU Zhi-qiang, ZHANG Lin-an, et al. The preparation of TiO2/Eu3+,Y3+down-conversion film and it′s application in dye-sensitized solar cell［J］. Acta Photonica Sinica, 2014, 43(12): 1216003.

[11] [11] YAO N, HUANG J, KE F, et al. Enhanced light harvesting of dye-sensitized solar cells with up/down conversion materials［J］. Electrochimica Acta, 2015, 154: 273-277.

[12] [12] WANG Hui-li, NIE Ming-qi Q, HAO Hong-shun, et al. Preparation of TiO2/Eu3+ down-conversion film and its application in dye-sensitized solar cells［J］. Journal of Luminescence, 2014, 35(10): 1182-1187.

[13] [13] HE Dong-li, LU Shu-chen, QU Xiu-rong, et al. Preparation of nanocrystalline Gd2(WO4)3:Eu3+,Sm3+and the sensitization of Sm3+ to Eu3+ characteristic emission［J］. Chinese Journal of Luminescence, 2013, 34(2): 171-177.

[14] [14] YANG Hua-ming, ZHANG Hua, OU-YANG Jing, et al. Research progress on fractal characterization of mesoporous materials ［J］. Journal of Function Materials, 2005, 36(4): 495-502.

[15] [15] ZHAO Cong, MENG Qing-yu, SUN Wen-jun. Luminescence properties of Eu3+ doped CaMoO4 micron phosphors［J］. Acta Physica Sinica, 2015, 64(10): 107803.

[16] [16] CHEN Ai-min, WANG Jing, BO Ying-ying, et al. Synthesis, characterization and photoluminescence properties of hierarchical Mg3B2O6:Eu3+ flower-like microspheres［J］. Chinese Journal of Inorganic Chemistry, 2015, 31(8): 1548-1554.

[17] [17] VISHWAKARMA A K, JHA K, JAYASIMHADRI M, et al. Red light emitting BaNb2O6:Eu3+ phosphor for solid state lighting applications［J］. Journal of Alloys & Compounds, 2015, 46(5): 97–101.

[18] [18] XIN M, ZHAOHUI H, MINGHAO F, et al. Energy transfer from Sm3+ to Eu3+ in red-emitting phosphor LaMgAl11O19:Sm3+, Eu3+ for solar cells and near-ultraviolet white light-emitting diodes［J］. Inorganic Chemistry, 2014, 53(12): 6060-6065.

[19] [19] HU Yuan, XIA Hai-ping, ZHANG Li. Emission properties of Eu-doped nano-Lu3Al5O12 powders by ultrasonic atomization and co-precipitation method［J］. Acta Photonica Sinica, 2011, 40(11): 1646-1651.

[20] [20] SARAF R, SHIVAKUMARA C, BEHERA S, et al. Photoluminescence, photocatalysis and Judd-Ofelt analysis of Eu3+-activated layered BiOCl phosphors［J］. RSC Advances, 2015, 5(6): 4109-4120.

[21] [21] SARAF R, SHIVAKUMARA C, BEHERA S, et al. Synthesis of Eu3+-activated BiOF and BiOBr phosphors: photoluminescence, Judd–Ofelt analysis and photocatalytic properties ［J］. RSC Advances, 2015, 5(12): 9241-9254.

[22] [22] MIAO J, SU J, WEN Y, et al. Preparation, characterization and photoluminescence of Sm3+ doped NaGdF4 nanoparticles［J］. Journal of Alloys & Compounds, 2015, (636): 8-11.

[23] [23] YANG Zhi-ping, LIANG Xiao-shuang, ZHAO Yin-hong, et al. Preparation and luminescence properties of reddish-orange phosphors Ca3Y2(SiO9)2:Sm3+［J］. Acta Photonica Sinica, 2014, 43(3): 0316002.

[24] [24] LIN H, YANG D, LIU G, et al. Optical absorption and photoluminescence in Sm3+ and Eu3+ doped rare-earth borate glasses ［J］. Journal of Luminescence, 2005, 113(1-2): 121-128.

[25] [25] HUANG J H, HUNG P Y, HU S F, et al. Improvement efficiency of a dye-sensitized solar cell using Eu3+ modified TiO2 nanoparticles as a secondary layer electrode［J］. Journal of Materials Chemistry, 2010, 20(31): 6505-6511.

[26] [26] LIANG Lin-yun, DAI Song-yuan, HU Lin-hua, et al. Effect of TiO2 particle size on the properties of electron transport and back-reaction in dye-sensitized solar cells［J］. Acta Physica Sinica, 2009, 58(2): 1338-1343.