Mo-doped BiVO4 photoanodes synthesized by reactive sputtering.

We report a scalable and reproducible method for reactive co-sputtering of Mo-doped BiVO4 thin films with broad compositional control. Optimal photoanode performance is achieved at a Mo concentration of 3 at. %. Incorporation of Mo promotes growth of large grains and reduces majority carrier transport limitations, resulting in maximum AM1.5G photocurrent densities of 3.5 mA cm(-2) at 1.23 V vs. RHE in pH 6.8 buffer solution containing 0.1 M Na2 SO3 as a hole scavenger. Operation as a front-illuminated water oxidation photoanode is achieved by balancing the operational stability, catalytic activity, and parasitic optical absorption of a FeOOH oxygen evolution catalyst. FeOOH/Mo:BiVO4 thin film photoanodes enable water oxidation under the front-side illumination conditions used in integrated tandem water splitting devices.

[1]  Luca Boarino,et al.  Monolithic cells for solar fuels. , 2014, Chemical Society reviews.

[2]  Rui Liu,et al.  Efficient water-splitting device based on a bismuth vanadate photoanode and thin-film silicon solar cells. , 2014, ChemSusChem.

[3]  Frances A. Houle,et al.  Life-cycle net energy assessment of large-scale hydrogen production via photoelectrochemical water splitting , 2014 .

[4]  F. Toma,et al.  Electronic Structure of Monoclinic BiVO4 , 2014 .

[5]  Yiseul Park,et al.  Preparation of Bi-Based Ternary Oxide Photoanodes BiVO4, Bi2WO6, and Bi2Mo3O12 Using Dendritic Bi Metal Electrodes. , 2014, The journal of physical chemistry letters.

[6]  N. Lewis,et al.  Improved Stability of Polycrystalline Bismuth Vanadate Photoanodes by Use of Dual-Layer Thin TiO_2/Ni Coatings , 2014 .

[7]  Ib Chorkendorff,et al.  2-Photon tandem device for water splitting: comparing photocathode first versus photoanode first designs , 2014 .

[8]  Junwang Tang,et al.  1D Co‐Pi Modified BiVO4/ZnO Junction Cascade for Efficient Photoelectrochemical Water Cleavage , 2014 .

[9]  Y. Tong,et al.  NiO decorated Mo:BiVO4 photoanode with enhanced visible-light photoelectrochemical activity , 2014 .

[10]  Kyoung-Shin Choi,et al.  Nanoporous BiVO4 Photoanodes with Dual-Layer Oxygen Evolution Catalysts for Solar Water Splitting , 2014, Science.

[11]  Ali Javey,et al.  BiVO4 thin film photoanodes grown by chemical vapor deposition. , 2014, Physical chemistry chemical physics : PCCP.

[12]  Yiseul Park,et al.  Marked enhancement in electron-hole separation achieved in the low bias region using electrochemically prepared Mo-doped BiVO4 photoanodes. , 2014, Physical chemistry chemical physics : PCCP.

[13]  Kai Zhu,et al.  Efficient solar photoelectrolysis by nanoporous Mo:BiVO4 through controlled electron transport. , 2014, Physical chemistry chemical physics : PCCP.

[14]  Joel W. Ager,et al.  Reactive Sputtering of Bismuth Vanadate Photoanodes for Solar Water Splitting , 2013 .

[15]  Miro Zeman,et al.  Efficient solar water splitting by enhanced charge separation in a bismuth vanadate-silicon tandem photoelectrode , 2013, Nature Communications.

[16]  K. Sivula,et al.  Photoelectrochemical Tandem Cells for Solar Water Splitting , 2013 .

[17]  A. Bard,et al.  Combined charge carrier transport and photoelectrochemical characterization of BiVO4 single crystals: intrinsic behavior of a complex metal oxide. , 2013, Journal of the American Chemical Society.

[18]  G. N. Baum,et al.  Technical and economic feasibility of centralized facilities for solar hydrogen production via photocatalysis and photoelectrochemistry , 2013 .

[19]  Hyunwoong Park,et al.  Strategic Modification of BiVO4 for Improving Photoelectrochemical Water Oxidation Performance , 2013 .

[20]  S. Boettcher,et al.  An Optocatalytic Model for Semiconductor-Catalyst Water-Splitting Photoelectrodes Based on In Situ Optical Measurements on Operational Catalysts. , 2013, The journal of physical chemistry letters.

[21]  Yiseul Park,et al.  Progress in bismuth vanadate photoanodes for use in solar water oxidation. , 2013, Chemical Society reviews.

[22]  F. Abdi,et al.  Efficient BiVO4 Thin Film Photoanodes Modified with Cobalt Phosphate Catalyst and W‐doping , 2013 .

[23]  Wenjun Luo,et al.  Formation energy and photoelectrochemical properties of BiVO4 after doping at Bi3+ or V5+ sites with higher valence metal ions. , 2013, Physical chemistry chemical physics : PCCP.

[24]  J. Jang,et al.  Photocatalytic and photoelectrochemical water oxidation over metal-doped monoclinic BiVO(4) photoanodes. , 2012, ChemSusChem.

[25]  Y. Tachibana,et al.  Artificial photosynthesis for solar water-splitting , 2012, Nature Photonics.

[26]  Jong Hyeok Park,et al.  Photoelectrochemical cells with tungsten trioxide/Mo-doped BiVO4 bilayers. , 2012, Physical chemistry chemical physics : PCCP.

[27]  A. Kudo,et al.  Facile fabrication of an efficient BiVO4 thin film electrode for water splitting under visible light irradiation , 2012, Proceedings of the National Academy of Sciences.

[28]  C. Mullins,et al.  Incorporation of Mo and W into nanostructured BiVO4 films for efficient photoelectrochemical water oxidation. , 2012, Physical chemistry chemical physics : PCCP.

[29]  Roel van de Krol,et al.  Nature and Light Dependence of Bulk Recombination in Co-Pi-Catalyzed BiVO4 Photoanodes , 2012 .

[30]  Lin-Wang Wang,et al.  Thermodynamic Oxidation and Reduction Potentials of Photocatalytic Semiconductors in Aqueous Solution , 2012, 1203.1970.

[31]  Jingying Shi,et al.  Photocatalytic Water Oxidation on BiVO4 with the Electrocatalyst as an Oxidation Cocatalyst: Essential Relations between Electrocatalyst and Photocatalyst , 2012 .

[32]  Tao Yu,et al.  Effects of Surface Electrochemical Pretreatment on the Photoelectrochemical Performance of Mo-Doped BiVO4 , 2012 .

[33]  Kyoung-Shin Choi,et al.  Efficient and stable photo-oxidation of water by a bismuth vanadate photoanode coupled with an iron oxyhydroxide oxygen evolution catalyst. , 2012, Journal of the American Chemical Society.

[34]  T. Furtak,et al.  Cobalt-phosphate (Co-Pi) catalyst modified Mo-doped BiVO4 photoelectrodes for solar water oxidation , 2011 .

[35]  D. Gamelin,et al.  Near-complete suppression of surface recombination in solar photoelectrolysis by "Co-Pi" catalyst-modified W:BiVO4. , 2011, Journal of the American Chemical Society.

[36]  Tao Yu,et al.  Solar hydrogen generation from seawater with a modified BiVO4 photoanode , 2011 .

[37]  A. Bard,et al.  Factors in the Metal Doping of BiVO4 for Improved Photoelectrocatalytic Activity as Studied by Scanning Electrochemical Microscopy and First-Principles Density-Functional Calculation , 2011 .

[38]  Roel van de Krol,et al.  Highly Improved Quantum Efficiencies for Thin Film BiVO4 Photoanodes , 2011 .

[39]  Liejin Guo,et al.  Nanostructured WO₃/BiVO₄ heterojunction films for efficient photoelectrochemical water splitting. , 2011, Nano letters.

[40]  Nathan T. Hahn,et al.  Photoelectrochemical Oxidation of Water Using Nanostructured BiVO4 Films , 2011 .

[41]  James R. McKone,et al.  Solar water splitting cells. , 2010, Chemical reviews.

[42]  Aron Walsh,et al.  Band Edge Electronic Structure of BiVO4: Elucidating the Role of the Bi s and V d Orbitals , 2009 .

[43]  T. Moore,et al.  Biology and technology for photochemical fuel production. , 2009, Chemical Society reviews.

[44]  Weifeng Yao,et al.  Effects of molybdenum substitution on the photocatalytic behavior of BiVO4. , 2008, Dalton transactions.

[45]  M. Olsson,et al.  THIN FILMS ENGINEERING OF INDIUM TIN OXIDE: LARGE AREA FLAT PANEL DISPLAYS APPLICATION , 2006 .

[46]  H. Sugihara,et al.  Photoelectrochemical decomposition of water into H2 and O2 on porous BiVO4 thin-film electrodes under visible light and significant effect of Ag ion treatment. , 2006, The journal of physical chemistry. B.

[47]  John A. Turner,et al.  Sustainable Hydrogen Production , 2004, Science.

[48]  Lars Hultman,et al.  Microstructural evolution during film growth , 2003 .

[49]  A. Kudo,et al.  A Novel Aqueous Process for Preparation of Crystal Form-Controlled and Highly Crystalline BiVO4 Powder from Layered Vanadates at Room Temperature and Its Photocatalytic and Photophysical Properties , 1999 .

[50]  G. Bräuer,et al.  Large area glass coating , 1999 .

[51]  D. Mergel,et al.  Nucleation and growth in TiO2 films prepared by sputtering and evaporation , 1994 .

[52]  Evans,et al.  Scaling analysis of diffusion-mediated island growth in surface adsorption processes. , 1992, Physical review. B, Condensed matter.

[53]  H. Gerischer,et al.  Photodecomposition of Semiconductors – A Thermodynamic Approach. A Citation-Classic Commentary on the Stability of semiconductor electrodes against photodecomposition , 1977 .