Zinc oxide based dye-sensitized solar cells: A review

Zinc oxide (ZnO) is the closest alternative to TiO2 as the semiconductor material in a dye-sensitized solar cell (DSSC). This is to be attributed to the facts that both TiO2 and ZnO have same electron affinities and almost the same band gap energies, and ZnO has much higher electron diffusivity than TiO2, a high electron mobility, a large excitation binding energy, is available at low-cost, and stable against photo-corrosion. The article provides a broad survey of ZnO based DSSCs, and highlights the potential of utilizing a ZnO photoanode in the place of a TiO2 photoanode in a DSSC. The merits of a ZnO photoanode, over against those of a TiO2 photoanode, are discussed in detail, associated main problems are mentioned, and their solutions are suggested. Parameters to improve the performance of a DSSC are revealed and solutions to optimize them are suggested. Discussions are made on ZnO based flexible, quasi-solid state, and solid state DSSCs. The advantages and disadvantages of ZnO as semiconductor material in DSSCs are weighed. All architectures reported till date are cited, and the techniques used to achieve such hierarchical structures are mentioned. A thorough discussion is made on the dyes used for ZnO based DSSCs. Organic dyes and metal-free dyes are found to be most suitable for such DSSCs. Optimum particle size of ZnO, its stability, its suitable facet for the application in a DSSC, and the best redox couple for a ZnO based DSSC are discussed with evidences. Great emphasis is given on ZnO films that are doped with various materials. The review also discusses miscellaneous works on ZnO based DSSCs. A hitherto never discussed concept of usage of MOFs in a ZnO based DSSC concludes the review.

[1]  A. Ennaoui,et al.  “Basic idea, advance approach”: Efficiency boost by sensitization of blended dye on chemically deposited ZnO films , 2016 .

[2]  A. Einstein.  Zur Quantentheorie der Strahlung , 1916 .

[3]  Shui-Tong Lee,et al.  Synthesis of Hierarchical Porous ZnO Disklike Nanostructures for Improved Photovoltaic Properties of Dye-Sensitized Solar Cells , 2010 .

[4]  J. Hupp,et al.  Dye sensitized solar cells: TiO2 sensitization with a bodipy-porphyrin antenna system. , 2010, Langmuir : the ACS journal of surfaces and colloids.

[5]  Guo-Qiang Lo,et al.  High-bendability flexible dye-sensitized solar cell with a nanoparticle-modified ZnO-nanowire electrode , 2008 .

[6]  T. Tachikawa,et al.  One-electron redox processes during polyoxometalate-mediated photocatalytic reactions of TiO(2) studied by two-color two-laser flash photolysis. , 2006, Chemistry.

[7]  Dong Young Kim,et al.  Dye-sensitized solar cells using network structure of electrospun ZnO nanofiber mats , 2007 .

[8]  S. Sohn,et al.  Effects of the aspect ratio on the dye adsorption of ZnO nanorods grown by using a sonochemical method for dye-sensitized solar cells , 2012 .

[9]  D. Lincot,et al.  Design of a hierarchical structure of ZnO by electrochemistry for ZnO‐based dye‐sensitized solar cells , 2010 .

[10]  Y. Zhang,et al.  Preparation of Cauliflower-like ZnO Films by Chemical Bath Deposition: Photovoltaic Performance and Equivalent Circuit of Dye-sensitized Solar Cells , 2013 .

[11]  H. Tributsch,et al.  ELECTROCHEMISTRY OF EXCITED MOLECULES: PHOTO‐ELECTROCHEMICAL REACTIONS OF CHLOROPHYLLS * , 1971 .

[12]  Wei Wang,et al.  Transparent, Double‐Sided, ITO‐Free, Flexible Dye‐Sensitized Solar Cells Based on Metal Wire/ZnO Nanowire Arrays , 2012 .

[13]  T. Berger,et al.  ZnO-based dye solar cell with pure ionic-liquid electrolyte and organic sensitizer: the relevance of the dye–oxide interaction in an ionic-liquid medium. , 2011, Physical chemistry chemical physics : PCCP.

[14]  Dye-sensitized solar cells with a tri-layer ZnO photo-electrode , 2013 .

[15]  Wei Zhang,et al.  High efficiency dye-sensitized solar cells based on three-dimensional multilayered ZnO nanowire arrays with "caterpillar-like" structure. , 2012, Nano letters.

[16]  P. Patil,et al.  Dye sensitized solar cells based on zinc oxide bottle brush , 2011 .

[17]  Guozhong Cao,et al.  ZnO Nanostructures for Dye‐Sensitized Solar Cells , 2009 .

[18]  D. Lincot,et al.  Electrodeposition of Inorganic/Organic Hybrid Thin Films , 2009 .

[19]  Jun Du,et al.  Continuous wet-process growth of ZnO nanoarrays for wire-shaped photoanode of dye-sensitized solar cell. , 2016, Journal of colloid and interface science.

[20]  Kuo-Chuan Ho,et al.  Synthesis of hexagonal ZnO clubs with opposite faces of unequal dimensions for the photoanode of dye-sensitized solar cells. , 2011, Physical chemistry chemical physics : PCCP.

[21]  M. Sastry,et al.  Keggin ions as UV-switchable reducing agents in the synthesis of Au core-Ag shell nanoparticles. , 2003, Journal of the American Chemical Society.

[22]  D. Kuang,et al.  Sonochemical preparation of hierarchical ZnO hollow spheres for efficient dye-sensitized solar cells. , 2010, Chemistry.

[23]  K. Prabakar,et al.  Banyan Root Structured Mg-Doped ZnO Photoanode Dye-Sensitized Solar Cells , 2013 .

[24]  Tsukasa Yoshida,et al.  Electrochemical Self‐Assembly of Nanoporous ZnO/Eosin Y Thin Films and Their Sensitized Photoelectrochemical Performance , 2000 .

[25]  Kuo-Chuan Ho,et al.  Electrophoretic deposition of ZnO film and its compression for a plastic based flexible dye-sensitiz , 2011 .

[26]  V. Eskizeybek,et al.  Fast production of ZnO nanorods by arc discharge in de-ionized water and applications in dye-sensitized solar cells , 2014 .

[27]  Soo-Jung Lee,et al.  Synthesis of ZnO nanopowders by DC thermal plasma for dye-sensitized solar cells , 2013 .

[28]  Minoru Obara,et al.  Fabrication and characterization of ZnO nanorods by pulsed laser deposition method through catalyst-free process , 2007, SPIE LASE.

[29]  H. Miura,et al.  Improvement of Light Harvesting by Addition of a Long-Wavelength Absorber in Dye-Sensitized Solar Cells Based on ZnO and Indoline Dyes , 2015 .

[30]  Yadong Li,et al.  ZnO hierarchical aggregates: Solvothermal synthesis and application in dye-sensitized solar cells , 2013, Nano Research.

[31]  Yan Hao,et al.  Cobalt(II/III) redox electrolyte in ZnO nanowire-based dye-sensitized solar cells. , 2013, ACS applied materials & interfaces.

[32]  Misook Kang,et al.  Improving the photovoltaic conversion efficiency of ZnO based dye sensitized solar cells by indium doping , 2017 .

[33]  W. Li,et al.  Asymmetric ZnO panel-like hierarchical architectures with highly interconnected pathways for free-electron transport and photovoltaic improvements. , 2012, Chemistry.

[34]  Kuo-Chuan Ho,et al.  Electrochemical synthesis of a double‐layer film of ZnO nanosheets/nanoparticles and its application for dye‐sensitized solar cells , 2014 .

[35]  Hironori Arakawa,et al.  Highly Efficient Photon-to-Electron Conversion of Mercurochrome-sensitized , 2000 .

[36]  Wei‐chen Chang,et al.  Optimization of dye adsorption time and film thickness for efficient ZnO dye-sensitized solar cells with high at-rest stability , 2012, Nanoscale Research Letters.

[37]  A. Matsuda,et al.  Enhanced dye‐sensitized solar cells performance of ZnO nanorod arrays grown by low‐temperature hydrothermal reaction , 2013 .

[38]  T. S. Senthil,et al.  Applications of highly ordered paddle wheel like structured ZnO nanorods in dye sensitized solar cells , 2013 .

[39]  C. Hill,et al.  Homogeneous catalysis by transition metal oxygen anion clusters , 1995 .

[40]  Giorgio Sberveglieri,et al.  Hierarchically assembled ZnO nanocrystallites for high-efficiency dye-sensitized solar cells. , 2011, Angewandte Chemie.

[41]  Md. Faruk Hossain,et al.  Fabrication of well-aligned and dumbbell-shaped hexagonal ZnO nanorod arrays and their dye sensitized solar cell applications , 2010 .

[42]  T. Peng,et al.  Effects of rare earth ion modifications on the photoelectrochemical properties of ZnO-based dye-sensitized solar cells , 2011 .

[43]  T. Rao,et al.  Photoelectrochemical Studies on Dye‐Sensitized Particulate ZnO Thin‐Film Photoelectrodes in Nonaqueous Media , 1997 .

[44]  Meng Cao,et al.  Influence of ion-doping on the photoelectric properties of mesoporous ZnO thin films , 2011, International Conference on Thin Film Physics and Applications.

[45]  Seeram Ramakrishna,et al.  Improved Electron Diffusion Coefficient in Electrospun TiO2 Nanowires , 2009 .

[46]  Seung-Bin Park,et al.  Highly efficient dye-sensitized solar cell with an electrostatic spray deposited upright-standing boron-doped ZnO (BZO) nanoporous nanosheet-based photoanode , 2013 .

[47]  Stefano Bianco,et al.  Sponge-like ZnO nanostructures by low temperature water vapor-oxidation method as dye-sensitized solar cell photoanodes , 2014 .

[48]  J. Zhai,et al.  Electro-hydrodynamic fabrication of ZnO-based dye sensitized solar cells , 2007 .

[49]  Jin Chang,et al.  ZnO Nanocones with High-Index {101̅1} Facets for Enhanced Energy Conversion Efficiency of Dye-Sensitized Solar Cells , 2013 .

[50]  Fengyan Li,et al.  Enhanced photovoltaic response of the first polyoxometalate-modified zinc oxide photoanode for solar cell application , 2012 .

[51]  Tsukasa Yoshida,et al.  Synthesis of a novel heptamethine–cyanine dye for use in near-infrared active dye-sensitized solar cells with porous zinc oxide prepared at low temperature , 2011 .

[52]  Guo-Qiang Lo,et al.  Improved dye-sensitized solar cells with a ZnO-nanoflower photoanode , 2007 .

[53]  Kuo-Chuan Ho,et al.  A ruthenium complex with superhigh light-harvesting capacity for dye-sensitized solar cells. , 2006, Angewandte Chemie.

[54]  M. Grätzel.  Dye-sensitized solar cells , 2003 .

[55]  Dongsheng Xu,et al.  Hierarchical ZnO Nanostructures Obtained by Electrodeposition , 2007 .

[56]  S. Bianco,et al.  Coral‐shaped ZnO nanostructures for dye‐sensitized solar cell photoanodes , 2014 .

[57]  M. Özacar,et al.  Fe-tannic acid complex dye as photo sensitizer for different morphological ZnO based DSSCs. , 2016, Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy.

[58]  J. Anta,et al.  ZnO/ZnO Core–Shell Nanowire Array Electrodes: Blocking of Recombination and Impressive Enhancement of Photovoltage in Dye-Sensitized Solar Cells , 2013 .

[59]  H. Han,et al.  Mesoporous F-doped ZnO prism arrays with significantly enhanced photovoltaic performance for dye-sen , 2011 .

[60]  N. Park,et al.  Enhanced Photovoltaic Properties of SiO2-treated ZnO Nanocrystalline Electrode for Dye-sensitized Solar Cell , 2007 .

[61]  Raymond A. Wong,et al.  Electrochemical and structural analysis of Al-doped ZnO nanorod arrays in dye-sensitized solar cells , 2012 .

[62]  Chih-Yu Hsu,et al.  Ionic liquid diffusion properties in tetrapod-like ZnO photoanode for dye-sensitized solar cells , 2012 .

[63]  Enhanced performance of a flexible dye-sensitized solar cell with a composite semiconductor film of ZnO nanorods and ZnO nanoparticles , 2012 .

[64]  Jiawei Gong,et al.  Review on dye-sensitized solar cells (DSSCs): Advanced techniques and research trends , 2017 .

[65]  Low-Temperature Fabrication of Dye-Sensitized ZnO Electrodes via Zinc Hydroxide Acetate by Utilizing Liquid Phase , 2013 .

[66]  Yong Ding,et al.  Single-Crystal Nanorings Formed by Epitaxial Self-Coiling of Polar Nanobelts , 2004, Science.

[67]  E. Aydil,et al.  Synthesis and characterization of ZnO nanowires and their integration into dye-sensitized solar cells , 2006 .

[68]  Tao Yu,et al.  Interfacial modification of photoelectrode in ZnO-based dye -sensitized solar cells and its efficiency improvement mechanism , 2012 .

[69]  S. Sasaki,et al.  TiO2- and ZnO-based solar cells using a chlorophyll a derivative sensitizer for light-harvesting and energy conversion , 2010 .

[70]  M. S. Akhtar,et al.  Controlled synthesis of various ZnO nanostructured materials by capping agents-assisted hydrothermal method for dye-sensitized solar cells , 2008 .

[71]  Yue Zhang,et al.  Facile synthesis and photoelectrochemical performance of the bush-like ZnO nanosheets film , 2012 .

[72]  Yan Li,et al.  Fabrication of ZnO nanorods and nanotubes in aqueous solutions , 2005 .

[73]  Hong Deng,et al.  Facile synthesis of ZnO nanobullets/nanoflakes and their applications to dye-sensitized solar cells , 2011 .

[74]  K. Leung,et al.  Effect of Electrolyte Conductivity on Controlled Electrochemical Synthesis of Zinc Oxide Nanotubes and Nanorods , 2013 .

[75]  K. Jensen,et al.  Properties of the CdSe(0001), (0001), and (1120) single crystal surfaces: Relaxation, reconstruction, and adatom and admolecule adsorption. , 2005, The journal of physical chemistry. B.

[76]  Jun Sun,et al.  Graphene Scaffolds Enhanced Photogenerated Electron Transport in ZnO Photoanodes for High-Efficiency Dye-Sensitized Solar Cells , 2013 .

[77]  J. Caro,et al.  Solid-state dye-sensitized ZnO solar cells prepared by low-temperature methods , 2011 .

[78]  T. Soga,et al.  Hot-compress: A new postdeposition treatment for ZnO-based flexible dye-sensitized solar cells , 2016 .

[79]  H. Abdullah,et al.  Morphological and electron transport studies in ZnO dye-sensitized solar cells incorporating multi- and single-walled carbon nanotubes , 2013 .

[80]  I. Weinstock.  Homogeneous-Phase Electron-Transfer Reactions of Polyoxometalates. , 1998, Chemical reviews.

[81]  N. Muthukumarasamy,et al.  Synthesis of garland like ZnO nanorods and their application in dye sensitized solar cells , 2013 .

[82]  T. C. McGill,et al.  Electron diffusion length and lifetime in p-type GaN , 1998 .

[83]  Theoretical characterization of highly efficient porphyrazin dye sensitized solar cells , 2014, Journal of Nanoparticle Research.

[84]  T. Pauporté,et al.  Nanofibrous-like ZnO layers deposited by magnetron sputtering and their integration in dye-sensitized solar cells , 2012 .

[85]  Tao Yu,et al.  Effective electron collection in highly (110)-oriented ZnO porous nanosheet framework photoanode , 2010, Nanotechnology.

[86]  S. Xie,et al.  A simple and cheap way to produce porous ZnO ribbons and their photovoltaic response , 2007 .

[87]  Yantao Shi,et al.  Optimizing nanosheet-based ZnO hierarchical structure through ultrasonic-assisted precipitation for remarkable photovoltaic enhancement in quasi-solid dye-sensitized solar cells , 2012 .

[88]  Haiyan Chen,et al.  The charge-transfer property and the performance of dye-sensitized solar cells of nitrogen doped zinc oxide , 2012 .

[89]  L. Bahadur,et al.  Structural and optical properties of tripod-like ZnO thin film and its application in dye-sensitized solar cell , 2013, Journal of Solid State Electrochemistry.

[90]  Chenguo Hu,et al.  Time stability of dye-sensitized solar cell based on ZnO sphere aggregates , 2012 .

[91]  K. Ho,et al.  Benzothiadiazole-containing donor-acceptor-acceptor type organic sensitizers for solar cells with ZnO photoanodes. , 2012, Chemical communications.

[92]  Jianning Ding,et al.  Hedgehog-like hierarchical ZnO needle-clusters with superior electron transfer kinetics for dye-sensitized solar cells , 2014 .

[93]  M. Zacharias,et al.  Homoepitaxial branching: an unusual polymorph of zinc oxide derived from seeded solution growth. , 2012, ACS Nano.

[94]  B. Liu,et al.  Electrophoretic deposition of ZnO photoanode for plastic dye-sensitized solar cells , 2010 .

[95]  Mohammed O. K. Parpia,et al.  Dynamics of charge transport and recombination in ZnO nanorod array dye-sensitized solar cells. , 2006, Physical chemistry chemical physics : PCCP.

[96]  T. Murakami,et al.  Optimum Particle Size of ZnO for Dye-sensitized Solar Cells , 2013 .

[97]  L. Chao,et al.  ZnO nanostructures grown on zinc nanocones by thermal oxidation , 2008 .

[98]  Liang-Yih Chen,et al.  Efficient electron transport in ZnO nanowire/nanoparticle dye-sensitized solar cells via continuous flow injection process , 2013 .

[99]  V. Balzani,et al.  Ligand substitution patterns control photophysical properties of ruthenium(II)-2,2′:6′,2″-terpyridine complexes—room temperature emission from [Ru(tpy)2]2+ analogues , 1992 .

[100]  R. Mane,et al.  Aggregation-Free ZnO Nanocrystals Coupled HMP-2 Dye of Higher Extinction Coefficient for Enhancing Energy Conversion Efficiency , 2009 .

[101]  Mingdeng Wei,et al.  Metal-organic framework derived hierarchical ZnO parallelepipeds as an efficient scattering layer in dye-sensitized solar cells. , 2014, Chemical communications.

[102]  S. Choopun,et al.  Effect of ZnO films immersion duration in N719 dye on energy conversion efficiency of DSSCs , 2016, Research on Chemical Intermediates.

[103]  J. Sagu,et al.  Effect of ZnO seed layer thickness on hierarchical ZnO nanorod growth on flexible substrates for application in dye-sensitised solar cells , 2013, Journal of Nanoparticle Research.

[104]  Kuo-Chuan Ho,et al.  Zinc oxide-based dye-sensitized solar cells with a ruthenium dye containing an alkyl bithiophene group , 2014 .

[105]  G. Cao,et al.  Effects of Lithium Ions on Dye-Sensitized ZnO Aggregate Solar Cells , 2010 .

[106]  Solution processed ZnO rectangular prism as an effective photoanode material for dye sensitized solar cells , 2015 .

[107]  K. Ho,et al.  Highly efficient dye-sensitized solar cell with a ZnO nanosheet-based photoanode , 2011 .

[108]  G. Oskam,et al.  Photovoltaic performance of nanostructured zinc oxide sensitised with xanthene dyes , 2008 .

[109]  Anders Hagfeldt,et al.  Studies of the adsorption process of Ru complexes in nanoporous ZnO electrodes , 2000 .

[110]  I. Ciofini,et al.  Effect of solvent and additives on the open-circuit voltage of ZnO-based dye-sensitized solar cells: a combined theoretical and experimental study. , 2010, Physical chemistry chemical physics : PCCP.

[111]  Xiulan Hu,et al.  Fabrication of Blanket‐Like Assembled ZnO Nanowhiskers Using an Aqueous Solution , 2009 .

[112]  J. Zúñiga-Pérez,et al.  Polarity effects on ZnO films grown along the nonpolar [1120] direction. , 2005, Physical review letters.

[113]  M. S. Akhtar,et al.  Influence of Sn doping on ZnO nanostructures from nanoparticles to spindle shape and their photoelectrochemical properties for dye sensitized solar cells , 2012 .

[114]  X. Wang,et al.  Effect of incorporation of reduced graphene oxide on ZnO-based dye-sensitized solar cells , 2016 .

[115]  L. Roza,et al.  Effect of dimethyl borate composition on the performance of boron doped ZnO dye-sensitized solar cell (DSSC) , 2016, Journal of Materials Science: Materials in Electronics.

[116]  Jianfeng Chen,et al.  Characterizing the role of iodine doping in improving photovoltaic performance of dye-sensitized hierarchically structured ZnO solar cells. , 2013, Chemphyschem : a European journal of chemical physics and physical chemistry.

[117]  A. Umar.  Growth of Comb-like ZnO Nanostructures for Dye-sensitized Solar Cells Applications , 2009, Nanoscale research letters.

[118]  Mechanism of charge recombination and IPCE in ZnO dye‐sensitized solar cells having I−/I  3− and Br−/Br  3− redox couple , 2011 .

[119]  Wei Zhang,et al.  Facile construction of nanofibrous ZnO photoelectrode for dye-sensitized solar cell applications , 2009 .

[120]  Soon Ho Chang,et al.  Enhancement of Photovoltaic Properties of Ti-modified Nanocrystalline ZnO Electrode for Dye-sensitized Solar Cell , 2005 .

[121]  M. S. Akhtar,et al.  Growth and characterization of nanospikes decorated ZnO sheets and their solar cell application , 2012 .

[122]  M. Ara,et al.  Optimization of ZnO thin film through spray pyrolysis technique and its application as a blocking layer to improving dye sensitized solar cell efficiency , 2016 .

[123]  Shuai Chang,et al.  Mesoporous multi-shelled ZnO microspheres for the scattering layer of dye sensitized solar cell with a high efficiency , 2016 .

[124]  Yicheng Lu,et al.  ZnO Schottky barriers and Ohmic contacts , 2011 .

[125]  F. Fabregat‐Santiago,et al.  Doping saturation in dye-sensitized solar cells based on ZnO:Ga nanostructured photoanodes , 2011 .

[126]  M. Matsumura,et al.  Dye sensitised zinc oxide: aqueous electrolyte: platinum photocell , 1976, Nature.

[127]  W. Heitler,et al.  The quantum theory of radiation , 1936 .

[128]  Jianguo Liu,et al.  Fabrication of hierarchically assembled microspheres consisting of nanoporous ZnO nanosheets for high-efficiency dye-sensitized solar cells , 2012 .

[129]  Kan Li,et al.  Application of ZnO micro-flowers as scattering layer for ZnO-based dye-sensitized solar cells with enhanced conversion efficiency , 2014 .

[130]  Weiqiao Deng,et al.  A D–π–A–π–A type dye for highly efficient dye-sensitized solar cells , 2015 .

[131]  E. Wang,et al.  The Application of ZnO Nanoparticles Containing Polyoxometalates in Dye-Sensitized Solar Cells† , 2013 .

[132]  Peidong Yang,et al.  ZnO-TiO2 Core-Shell Nanorod/P3HT Solar Cells , 2007 .

[133]  Guozhong Cao,et al.  Aggregation of ZnO nanocrystallites for high conversion efficiency in dye-sensitized solar cells. , 2008, Angewandte Chemie.

[134]  R. Thummel,et al.  The photophysical behavior of d6 complexes having nearly isoenergetic MLCT and ligand localized excited states , 1998 .

[135]  Yong Ding,et al.  Large-Scale Synthesis of Six-Nanometer-Wide ZnO Nanobelts , 2004 .

[136]  T. Ma,et al.  Solid‐State Synthesis of ZnO Nanostructures for Quasi‐Solid Dye‐Sensitized Solar Cells with High Efficiencies up to 6.46% , 2013, Advanced materials.

[137]  Di Gao,et al.  Solid-state dye-sensitized solar cells based on ordered ZnO nanowire arrays , 2012, Nanotechnology.

[138]  K. Ho,et al.  Microemulsion-assisted Zinc Oxide Synthesis: Morphology Control and Its Applications in Photoanodes of Dye-Sensitized Solar Cells☆ , 2016 .

[139]  O. Toma,et al.  Study of dye sensitized solar cells based on ZnO photoelectrodes deposited by laser ablation and doctor blade methods , 2015 .

[140]  G. Cao,et al.  Effects of Dye Loading Conditions on the Energy Conversion Efficiency of ZnO and TiO2 Dye-Sensitized Solar Cells , 2007 .

[141]  Hsin-Ming Cheng,et al.  High-efficiency metal-free organic-dye-sensitized solar cells with hierarchical ZnO photoelectrode , 2010 .

[142]  R. Katoh,et al.  Electron Injection Efficiency from Excited N3 into Nanocrystalline ZnO Films: Effect of (N3−Zn2+) Aggregate Formation , 2003 .

[143]  Lu-Yin Lin,et al.  Bifunctional Zinc Oxide Nanoburger Aggregates as the Dye-Adsorption and Light-Scattering Layer for Dye-Sensitized Solar Cells , 2015 .

[144]  Fabrication and optical properties of ordered sea urchin-like ZnO nanostructures by a simple hydrothermal process , 2013 .

[145]  Yicheng Lu,et al.  Fast electron transport in metal organic vapor deposition grown dye-sensitized ZnO nanorod solar cells. , 2006, The journal of physical chemistry. B.

[146]  Jianfeng Chen,et al.  Enhanced performance of dye-sensitized solar cells via the incorporation of an internal layer consisting of three-dimensional shuttlelike up-converter and ZnO nanocrystalline aggregates , 2013 .

[147]  Tsukasa Yoshida,et al.  Dye Sensitization of ZnO by Unsymmetrical Squaraine Dyes Suppressing Aggregation , 2006 .

[148]  I. B. Karki,et al.  Effect of organic dyes on the performance of ZnO based dye-sensitized solar cells , 2013 .

[149]  H. Abdullah,et al.  Structural and morphological studies of zinc oxide incorporating single-walled carbon nanotubes as a nanocomposite thin film , 2013, Journal of Materials Science: Materials in Electronics.

[150]  George A. Parks,et al.  The Isoelectric Points of Solid Oxides, Solid Hydroxides, and Aqueous Hydroxo Complex Systems , 1965 .

[151]  Michael Grätzel,et al.  Porphyrin-Sensitized Solar Cells with Cobalt (II/III)–Based Redox Electrolyte Exceed 12 Percent Efficiency , 2011, Science.

[152]  T. Soga,et al.  Compression of ZnO nanoparticle films at elevated temperature for flexible dye-sensitized solar cells , 2016 .

[153]  Federico Bella,et al.  Multi-functional energy conversion and storage electrodes using flower-like Zinc oxide nanostructures , 2014 .

[154]  E. Fortunato,et al.  Exploring the potential of laser assisted flow deposition grown ZnO for photovoltaic applications , 2016 .

[155]  Fabrication of Nanostructured Zinc Oxide Films on Plastic Substrates by Pyrolysis Method and their Application to Dye-Sensitized Solar Cells , 2013 .

[156]  Marius Grundmann,et al.  High electron mobility of epitaxial ZnO thin films on c-plane sapphire grown by multistep pulsed-laser deposition , 2003 .

[157]  Juan A. Anta,et al.  ZnO-Based Dye-Sensitized Solar Cells , 2012 .

[158]  S. Gosavi,et al.  Hierarchical zinc oxide pomegranate and hollow sphere structures as efficient photoanodes for dye-sensitized solar cells , 2016 .

[159]  Aleksandra Radenovic,et al.  ZnO-Al2O3 and ZnO-TiO2 core-shell nanowire dye-sensitized solar cells. , 2006, The journal of physical chemistry. B.

[160]  Wei Chen,et al.  A new photoanode architecture of dye sensitized solar cell based on ZnO nanotetrapods with no need for calcination , 2009 .