[1] Novoselov K, Geim A, Morozov S, et al. Electric field effect in atomically thin carbon films. Science, 2004, 306(5696): 666–669.[2] Bolotin K I, Sikes K, Jiang Z, et al. Ultrahigh electron mobility in suspended graphene. Solid State Commun., 2008, 146(9/10): 351–355.[3] Moroz ov S V, Novoselov K S, Katsnelson M I, et al. Giant intrinsic carrier mobilities in graphene and its bilayer. Phys. Rev. Lett., 2008, 100(1): 016602–1–4.[4] Zhu Y, Murali S, Cai W, et al. Graphene and graphene oxide: synthesis, properties, and applications. Adv. Mater., 2010, 22(35): 3906–3924.[5] Wang X, Zhi L, Müllen K. Transparent, conductive graphene electrodes for dye-sensitized solar cells. Nano Lett., 2008, 8(1): 323–327.[6] Wang Y, Tong S W, Xu X F, et al. Interface engineering of layer-by-layer stacked graphene anodes for high-performance organic solar cells. Adv. Mater., 2011, 23(13): 1514–1518.[7] Guo C X, Guai G H, Li C M. Graphene based materials: enhancing solar energy harvesting. Adv. Energy Mater., 2011, 1(3): 448–452.[8] Pang S, Hernandez Y, Feng X, et al. Graphene as transparent electrode material for organic electronics. Adv. Mater., 2011, 23(25): 2779–2795.[9] Kavan L, Yum J H, Gr?tzel M. Optically transparent cathode for dye-sensitized solar cells based on graphene nanoplatelets. ACS Nano, 2011, 5(1): 165–172.[10] Velten J, Mozer A J, Li D, et al. Carbon nanotube/graphene nanocomposite as efficient counter electrodes in dye-sensitized solar cells. Nanotechnology, 2012, 23(8): 085201–1–6.[11] Pan Z, Gu H, Wu M T, et al. Graphene-based functional materials for organic solar cells. Opt. Mater. Express, 2012, 2(6): 814–824.[12] Hong W, Xu Y, Lu G, et al. Transparent graphene/PEDOT-PSS composite films as counter electrodes of dye-sensitized solar cells. Electrochem. Commun., 2008, 10(10): 1555–1558.[13] Watcharotone S, Dikin D A, Stankovich S, et al. Graphene-silica composite thin films as transparent conductors. Nano Lett., 2007, 7(7): 1888–1892.[14] Yin Z, Sun S, Salim T, et al. Organic photovoltaic devices using highly flexible reduced graphene oxide films as transparent electrodes. ACS Nano, 2010, 4(9): 5263–5268.[15] Hasan S A, Rigueur J L, Harl R R, et al. Transferable graphene oxide films with tunable microstructures. ACS Nano, 2010, 4(12): 7367–7372.[16] Lee V, Whittaker L, Jaye C, et al. Large-area chemically modified graphene films: electrophoretic deposition and characterization by soft X-ray absorption spectroscopy. Chem. Mater., 2009, 21(16): 3905–3916.[17] Choi H, Hwang S, Bae H, et al. Electrophoretic graphene for transparent counter electrodes in dye-sensitised solar cells. Electron Lett., 2011, 47(4): 281–283.[18] Wang Y, Chen X, Zhong Y, et al. Large area, continuous, few-layered graphene as anodes in organic photovoltaic devices. Appl. Phys. Lett., 2009, 95(6): 063302–1–3.[19] Gomez De Arco L, Zhang Y, Schlenker C W, et al. Continuous, highly flexible, and transparent graphene films by chemical vapor deposition for organic photovoltaics. ACS Nano, 2010, 4(5): 2865–2873.[20] Tan Y, Jayawardena K, Adikaari A, et al. Photo-thermal chemical vapour deposition growth of graphene. Carbon, 2011, 50(2): 668–673.[21] Bi H, Huang F, Liang J, et al. Transparent conductive graphene films synthesized by ambient pressure chemical vapor deposition used as the front electrode of CdTe solar cells. Adv. Mater., 2011, 23(28): 3202–3206.[22] Park H, Brown P R, Bulovic V, et al. Graphene as transparent conducting electrodes in organic photovoltaic: studies in graphene morphology, hole transporting layers, and counter electrodes. Nano Lett., 2012, 12(1): 133–140.[23] Kasry A, Kuroda M A, Martyna G J, et al. Chemical doping of large-area stacked graphene films for use as transparent, conducting electrodes. ACS Nano, 2010, 4(7): 3839–3844.[24] Lee W H, Suk J W, Lee J, et al. Simultaneous transfer and doping of CVD-Grown graphene by fluoropolymer for transparent conductive films on plastic. ACS Nano, 2012, 6(2): 1284–1290.[25] Zhou X, Huang X, Qi X, et al. In situ synthesis of metal nanoparticles on single-layer graphene oxide and reduced graphene oxide surfaces. J. Phys. Chem. C, 2009, 113(25): 10842–10846.[26] Yin Z, Wu S, Zhou X, et al. Electrochemical deposition of ZnO nanorods on transparent reduced graphene oxide electrodes for hybrid solar cells. Small, 2010, 6(2): 307–312.[27] Zhou Y, Yang J, Cheng X, et al. Electrostatic self-assembly of graphene-silver multilayer films and their transmittance and electronic conductivity. Carbon, 2012, 50(12): 4343–4350.[28] Zhang S, Li Y, Pan N. Graphene based supercapacitor fabricated by vacuum filtration deposition. J. Power Sources, 2012, 206: 476–482.[29] T?lle F J, Fabritius M, Mülhaupt R. Emulsifier-free graphene dispersions with high graphene content for printed electronics and freestanding graphene films. Adv. Funct. Mater., 2012, 22(6): 1136–1144.[30] Salehi-Khojin A, Estrada D, Lin K Y, et al. Chemical sensors based on randomly stacked graphene flakes. Appl. Phys. Lett., 2012, 100(3): 033111–1–4.[31] Eda G, Lin Y Y, Miller S, et al. Transparent and conducting electrodes for organic electronics from reduced graphene oxide. Appl. Phys. Lett., 2008, 92(23): 233305.[32] Peng L, Feng Y, Lv P, et al. Transparent, conductive and flexible multi walled carbon nanotube/graphene hybrid electrodes with two three-dimensional microstructures. J. Phys. Chem. C, 2012, 116(8): 4970–4978.[33] Kavan L, Yum J H, Gr?tzel M. Optically transparent cathode for dye-sensitized solar cells based on graphene nanoplatelets. ACS Nano, 2010, 5(1): 165–172.[34] Roy-Mayhew J D, Boschloo G, Hagfeldt A, et al. Functionalized graphene sheets as a versatile replacement for platinum in dye-sensitized solar cells. ACS Appl. Mater. Interfaces, 2012, 4(5): 2794–2800.[35] Xue J, Rand B P, Uchida S, et al. A hybrid planar–mixed molecular heterojunction photovoltaic cell. Adv. Mater., 2005, 17(1): 66–71.[36] Peet J, Kim J, Coates N E, et al. Efficiency enhancement in low-bandgap polymer solar cells by processing with alkane dithiols. Nat. Mater., 2007, 6(7): 497–500.[37] Moulé A J, Meerholz K. Controlling morphology in polymer–fullerene mixtures. Adv. Mater., 2008, 20(2): 240–245.[38] Kymakis E, Koudoumas E, Franghiadakis I, et al. Post-fabrication annealing effects in polymer-nanotube photovoltaic cells. J. Phys. D: Appl. Phys., 2006, 39(6): 1058.[39] Liu Z, Liu Q, Huang Y, et al. Organic photovoltaic devices based on a novel acceptor material: graphene. Adv. Mater., 2008, 20(20): 3924–3930.[40] Liu Q, Liu Z, Zhang X, et al. Polymer photovoltaic cells based on solution-processable graphene and P3HT. Adv. Funct. Mater., 2009, 19(6): 894–904.[41] Liu Z, Liu L, Li H, et al. “Green” polymer solar cell based on water-soluble poly [3-(potassium-6-hexanoate) thiophene-2, 5-diyl] and aqueous-dispersible noncovalent functionalized graphene sheets. Sol. Energ. Mat. Sol. C, 2012, 97: 28–33.[42] Yu D, Park K, Durstock M, et al. Fullerene-grafted graphene for efficient bulk heterojunction polymer photovoltaic devices. J. Phys. Chem. Lett., 2011, 2(10): 1113–1118.[43] Mkhoyan K A, Contryman A W, Silcox J, et al. Atomic and electronic structure of graphene-oxide. Nano Lett., 2009, 9(3): 1058–1063.[44] Loh K P, Bao Q, Eda G, et al. Graphene oxide as a chemically tunable platform for optical applications. Nat. Chem., 2010, 2(12): 1015–1024.[45] Becerril H A, Mao J, Liu Z, et al. Evaluation of solution-processed reduced graphene oxide films as transparent conductors. ACS Nano, 2008, 2(3): 463–470.[46] Yu H, Kaneko Y, Yoshimura S, et al. Photovoltaic cell of carbonaceous film/n-type silicon. Appl. Phys. Lett., 1996, 68(4): 547–549.[47] Wei J, Jia Y, Shu Q, et al. Double-walled carbon nanotube solar cells. Nano Lett., 2007, 7(8): 2317–2321.[48] Arena A, Donato N, Saitta G, et al. Photovoltaic properties of multi-walled carbon nanotubes deposited on n-doped silicon. Microelectron. J., 2008, 39(12): 1659–1662.[49] Li Z, Kunets V P, Saini V, et al. Light-harvesting using high density p-type single wall carbon nanotube/n-type silicon heterojunctions. ACS Nano, 2009, 3(6): 1407–1414.[50] Li X, Zhu H, Wang K, et al. Graphene-on-silicon schottky junction solar cells. Adv. Mater., 2010, 22(25): 2743–2748.[51] Xie C, Lv P, Nie B, et al. Monolayer graphene film/silicon nanowire array Schottky junction solar cells. Appl. Phys. Lett., 2011, 99(13): 133113–1–3.[52] Xie C, Jie J, Nie B, et al. Schottky solar cells based on graphene nanoribbon/multiple silicon nanowires junctions. Appl. Phys. Lett., 2012, 100(19): 193103–1–4.[53] Zhang L, Fan L, Li Z, et al. Graphene-CdSe nanobelt solar cells with tunable configurations. Nano Res., 2011, 4(9): 891–900.[54] Liu Z, Li J, Sun Z H, et al. The application of highly doped single-layer graphene as the top electrodes of semitransparent organic solar cells. ACS Nano, 2012, 6(1): 810–818.[55] O'regan B, Gr?tzel M. A low-cost, high-efficiency solar cell based on dye-sensitized colloidal TiO2 films. Nature, 1991, 353(6346): 737–740.[56] Van de Lagemaat J, Benkstein K D, Frank A J. Relation between particle coordination number and porosity in nanoparticle films: implications to dye-sensitized solar cells. J. Phys. Chem. B, 2001, 105(50): 12433–12436.[57] Wang Q, Zhang Z, Zakeeruddin S M, et al. Enhancement of the performance of dye-sensitized solar cell by formation of shallow transport levels under visible light illumination. J. Phys. Chem. C, 2008, 112(17): 7084–7092.[58] Kim J Y, Noh J H, Zhu K, et al. General strategy for fabricating transparent TiO2 nanotube arrays for dye-sensitized photoelectrodes:llumination geometry and transport properties. ACS Nano, 2011, 5(4): 2647–2656.[59] Yen M Y, Hsiao M C, Liao S H, et al. Preparation of graphene/multi-walled carbon nanotube hybrid and its use as photoanodes of dye-sensitized solar cells. Carbon, 2011, 49(11): 3597–3606.[60] Brennan L J, Byrne M T, Bari M, et al. Carbon nanomaterials for dye-sensitized solar cell applications: a bright future. Adv. Energy Mater., 2011, 1(4): 472–485.[61] Song J, Yin Z, Yang Z, et al. Enhancement of photogenerated electron transport in dye‐sensitized solar cells with introduction of a reduced graphene oxide–TiO2 junction. Chem. Eur. J., 2011, 17(39): 10832–10837.[62] Jang Y H, Xin X, Byun M, et al. An unconventional route to high efficiency dye-sensitized solar cells via embedding graphitic thin films into TiO2 nanoparticle photoanode. Nano Lett., 2012, 12(1): 479–485.[63] Sun S, Gao L, Liu Y. Enhanced dye-sensitized solar cell using graphene-TiO2 photoanode prepared by heterogeneous coagulation. Appl. Phys. Lett., 2010, 96(8): 083113–1–3.[64] Tsai T H, Chiou S C, Chen S M. Enhancement of dye-sensitized solar cells by using graphene-TiO2 composites as photoelectrochemical working electrode. Int. J. Electrochem. Sci., 2011, 6: 3333–3343.[65] He Z, Guai G, Liu J, et al. Nanostructure control of graphene-composited TiO2 by a one-step solvothermal approach for high performance dye-sensitized solar cells. Nanoscale, 2011, 3(11): 4613–4616.[66] Ding J, Yu C, Yuan N, et al. High-quality GS/TiO2 Composite for the Photoanode of the Dye-sensitized Solar Cells. Materials for Renewable Energy & Environment, Shanghai, 2011: 90–94.[67] Tang Y B, Lee C S, Xu J, et al. Incorporation of graphenes in nanostructured TiO2 films via molecular grafting for dye-sensitized solar cell application. ACS Nano, 2010, 4(6): 3482–3488.[68] Yang N, Zhai J, Wang D, et al. Two-dimensional graphene bridges enhanced photoinduced charge transport in dye-sensitized solar cells. ACS Nano, 2010, 4(2): 887–894.[69] Li G, Wang T, Zhu Y, et al. Preparation and photoelectrochemical performance of Ag/graphene/TiO2 composite film. Appl. Surf. Sci., 2011, 257(15): 6568–6572.[70] Wang P, Han L, Zhu C, et al. Aqueous-phase synthesis of Ag-TiO2-reduced graphene oxide and Pt-TiO2-reduced graphene oxide hybrid nanostructures and their catalytic properties. Nano Res., 2011, 4(11): 1153–1162.[71] Zhu G, Xu T, Lv T, et al. Graphene-incorporated nanocrystalline TiO2 films for CdS quantum dot sensitized solar cells. J. Electroanal. Chem., 2010, 650(2): 248–251.[72] Guo C X, Yang H B, Sheng Z M, et al. Layered graphene/quantum dots for photovoltaic devices. Angew. Chem. Int. Ed., 2010, 49(17): 3014–3017. |