Ultrathin 2D-oxides: A perspective on fabrication, structure, defect, transport, electron, and phonon properties

In the field of atomically thin 2D materials, oxides are relatively unexplored in spite of the large number of layered oxide structures amenable to exfoliation. There is an increasing interest in ultra-thin film oxide nanostructures from applied points of view. In this perspective paper, recent progress in understanding the fundamental properties of 2D oxides is discussed. Two families of 2D oxides are considered: (1) van der Waals bonded layered materials in which the transition metal is in its highest valence state (represented by V$_2$O$_5$ and MoO$_3$) and (2) layered materials with ionic bonding between positive alkali cation layers and negatively charged transition metal oxide layers (LiCoO$_2$). The chemical exfoliation process and its combinaton with mechanical exfoliation are presented for the latter. Structural phase stability of the resulting nanoflakes, the role of cation size and the importance of defects in oxides are discussed. Effects of two-dimensionality on phonons, electronic band structures and electronic screening are placed in the context of what is known on other 2D materials, such as transition metal dichalcogenides. Electronic structure is discussed at the level of many-body-perturbation theory using the quasiparticle self-consistent $GW$ method, the accuracy of which is critically evaluated including effects of electron-hole interactions on screening and electron-phonon coupling. The predicted occurence of a two-dimensional electron gas on Li covered surfaces of LiCoO$_2$ and its relation to topological aspects of the band structure and bonding is presented as an example of the essential role of the surface in ultrathin materials. Finally, some case studies of the electronic transport and the use of these oxides in nanoscale field effect transistors are presented.

[1]  B. Laurent,et al.  Heterogeneous stochastic bifurcations explain intrinsic oscillatory patterns in entorhinal cortical stellate cells , 2022, Proceedings of the National Academy of Sciences of the United States of America.

[2]  Santosh Kumar Radha,et al.  Optical response and band structure of LiCoO2 including electron-hole interaction effects , 2021, Physical Review B.

[3]  S. Dhara,et al.  Electronic and vibrational decoupling in chemically exfoliated bilayer 2D-V2O5 , 2021 .

[4]  W. Lambrecht,et al.  Calculated phonon modes, infrared and Raman spectra in orthorhombic α − MoO3 and monolayer MoO3 , 2021, Journal of Applied Physics.

[5]  S. Louie,et al.  Predominance of non-adiabatic effects in zero-point renormalization of the electronic band gap , 2020, npj Computational Materials.

[6]  A. Sehirlioglu,et al.  Evaluating the chemical exfoliation of lithium cobalt oxide using UV-Vis spectroscopy , 2020, Nanoscale advances.

[7]  Santosh Kumar Radha,et al.  Electron microscopy and spectroscopic study of structural changes, electronic properties, and conductivity in annealed LixCoO2 , 2020, Physical Review Materials.

[8]  Santosh Kumar Radha,et al.  Electrical Characterization and Charge Transport in Chemically Exfoliated 2D LixCoO2 Nanoflakes , 2020 .

[9]  Xuan P. A. Gao,et al.  2D Semiconductor Transistors with Van der Waals Oxide MoO3 as Integrated High‐κ Gate Dielectric , 2020, Advanced Electronic Materials.

[10]  G. Rubloff,et al.  Elucidating Structural Transformations in LixV2O5 Electrochromic Thin Films by Multimodal Spectroscopies , 2020 .

[11]  G. Rubloff,et al.  Nanoscale depth and lithiation dependence of V2O5 band structure by cathodoluminescence spectroscopy , 2020 .

[12]  Li-Min Zhu,et al.  Synthesis of Functional Nanomaterials for Electrochemical Energy Storage , 2020 .

[13]  Ya‐Xia Yin,et al.  Layered Oxide Cathodes Promoted by Structure Modulation Technology for Sodium‐Ion Batteries , 2020, Advanced Functional Materials.

[14]  C. Sloby water splitting , 2020, Catalysis from A to Z.

[15]  R. Hillenbrand,et al.  Broad spectral tuning of ultra-low-loss polaritons in a van der Waals crystal by intercalation , 2020, Nature Materials.

[16]  A. Sehirlioglu,et al.  Effects of microstructure on fracture strength and conductivity of sintered NMC333 , 2020, Journal of the American Ceramic Society.

[17]  Santosh Kumar Radha,et al.  Spin-polarized two-dimensional electron/hole gases on LiCoO$_2$ layers. , 2020, SciPost Physics.

[18]  A. Khataee,et al.  A review on two-dimensional metal oxide and metal hydroxide nanosheets for modification of polymeric membranes , 2020 .

[19]  Santosh Kumar Radha,et al.  Topological band structure transitions and goniopolar transport in honeycomb antimonene as a function of buckling , 2019, 1912.03755.

[20]  Ping Song,et al.  Recent progress in two-dimensional nanomaterials: Synthesis, engineering, and applications , 2019, FlatChem.

[21]  M. Panagopoulou,et al.  Tungsten doping effect on V2O5 thin film electrochromic performance , 2019, Electrochimica Acta.

[22]  A. Sehirlioglu,et al.  Cation deficiency associated with the chemical exfoliation of lithium cobalt oxide , 2019, Journal of the American Ceramic Society.

[23]  Seong‐Ju Hwang,et al.  2D inorganic nanosheet-based hybrid photocatalysts: Design, applications, and perspectives , 2019, Journal of Photochemistry and Photobiology C: Photochemistry Reviews.

[24]  Seon-Jin Choi,et al.  Heterogeneous, Porous 2D Oxide Sheets via Rapid Galvanic Replacement: Toward Superior HCHO Sensing Application , 2019, Advanced Functional Materials.

[25]  Lin-wang Wang,et al.  Formation of two-dimensional transition metal oxide nanosheets with nanoparticles as intermediates , 2019, Nature Materials.

[26]  A. Fortunelli,et al.  2D oxides on metal materials: concepts, status, and perspectives. , 2019, Physical chemistry chemical physics : PCCP.

[27]  Liping Li,et al.  Iron-Doped LiCoO2 Nanosheets as Highly Efficient Electrocatalysts for Alkaline Water Oxidation , 2019, European Journal of Inorganic Chemistry.

[28]  A. Sehirlioglu,et al.  Stabilization of oil-in-water emulsions with graphene oxide and cobalt oxide nanosheets and preparation of armored polymer particles. , 2019, Journal of colloid and interface science.

[29]  C. O’Dwyer,et al.  NaV2O5 from Sodium Ion-Exchanged Vanadium Oxide Nanotubes and Its Efficient Reversible Lithiation as a Li-Ion Anode Material , 2019, ACS Applied Energy Materials.

[30]  K. Khoshmanesh,et al.  Atomically thin two-dimensional metal oxide nanosheets and their heterostructures for energy storage , 2019, Energy Storage Materials.

[31]  J. E. ten Elshof,et al.  2D metal oxide nanoflakes for sensing applications: Review and perspective , 2018, Sensors and Actuators B: Chemical.

[32]  Rui He,et al.  α-MoO3 as a Conductive 2D Oxide: Tunable n-Type Electrical Transport via Oxygen Vacancy and Fluorine Doping , 2018, ACS Applied Nano Materials.

[33]  Y. Yoon,et al.  Two-Dimensional Transition Metal Dichalcogenides and Metal Oxide Hybrids for Gas Sensing. , 2018, ACS sensors.

[34]  K. Miyoshi,et al.  Electronic states realized by the interplay between Li diffusion and Co3+/Co4+ charge ordering in LixCoO2 , 2018, Physical Review B.

[35]  J. Čejka,et al.  2D Oxide Nanomaterials to Address the Energy Transition and Catalysis , 2018, Advanced materials.

[36]  Yong‐Young Noh,et al.  Solution Processed Metal Oxide High‐κ Dielectrics for Emerging Transistors and Circuits , 2018, Advanced materials.

[37]  Guoxiong Wang,et al.  Oxygen Vacancies in ZnO Nanosheets Enhance CO2 Electrochemical Reduction to CO. , 2018, Angewandte Chemie.

[38]  T. Mallouk,et al.  Soft chemistry of ion-exchangeable layered metal oxides. , 2018, Chemical Society reviews.

[39]  A. Feldhoff,et al.  Two-Dimensional Oxides: Recent Progress in Nanosheets , 2018 .

[40]  Dimitar Pashov,et al.  Effect of ladder diagrams on optical absorption spectra in a quasiparticle self-consistent GW framework , 2018, 1802.01856.

[41]  K. Kalantar-zadeh,et al.  Two-Dimensional Transition Metal Oxide and Chalcogenide-Based Photocatalysts , 2017, Nano-micro letters.

[42]  A. Zunger,et al.  Polymorphous band structure model of gapping in the antiferromagnetic and paramagnetic phases of the Mott insulators MnO, FeO, CoO, and NiO , 2017, 1709.02494.

[43]  A. Gross,et al.  V2O5: A 2D van der Waals Oxide with Strong In-Plane Electrical and Optical Anisotropy. , 2017, ACS applied materials & interfaces.

[44]  Alemayehu S. Admasu,et al.  Bending and breaking of stripes in a charge ordered manganite , 2017, Nature Communications.

[45]  Walter R. L. Lambrecht,et al.  Lattice polarization effects on the screened Coulomb interaction $W$ of the GW approximation , 2017, 1706.10252.

[46]  Joohyun Lim,et al.  A powerful role of exfoliated metal oxide 2D nanosheets as additives for improving electrocatalyst functionality of graphene , 2017 .

[47]  Yue Hao,et al.  Diamond Field Effect Transistors With MoO3 Gate Dielectric , 2017, IEEE Electron Device Letters.

[48]  Jian Luo,et al.  The role of ceramic and glass science research in meeting societal challenges: Report from an NSF-sponsored workshop , 2017 .

[49]  Qiyuan He,et al.  Recent Advances in Ultrathin Two-Dimensional Nanomaterials. , 2017, Chemical reviews.

[50]  C. Walle,et al.  Controlling n-Type Doping in MoO3 , 2017 .

[51]  Wei Liu,et al.  Atomic layer confined vacancies for atomic-level insights into carbon dioxide electroreduction , 2017, Nature Communications.

[52]  R. Sasai,et al.  Photoinduced electron transfer in layer-by-layer thin solid films containing cobalt oxide nanosheets, porphyrin, and methyl viologen. , 2017, Physical chemistry chemical physics : PCCP.

[53]  Wei-Bing Zhang,et al.  High-Mobility Transport Anisotropy in Few-Layer MoO3 and Its Origin. , 2017, ACS applied materials & interfaces.

[54]  M. Gibertini,et al.  Breakdown of Optical Phonons' Splitting in Two-Dimensional Materials. , 2016, Nano letters.

[55]  Arnan Mitchell,et al.  Two dimensional and layered transition metal oxides , 2016 .

[56]  Huiyu Yuan,et al.  Two‐Dimensional Metal Oxide and Metal Hydroxide Nanosheets: Synthesis, Controlled Assembly and Applications in Energy Conversion and Storage , 2016 .

[57]  Jared T. Incorvati,et al.  Building a Fast Lane for Mg Diffusion in α-MoO3 by Fluorine Doping , 2016 .

[58]  Zhimei Sun,et al.  Electronic structures and enhanced optical properties of blue phosphorene/transition metal dichalcogenides van der Waals heterostructures , 2016, Scientific Reports.

[59]  D. Fischer,et al.  Mapping polaronic states and lithiation gradients in individual V2O5 nanowires , 2016, Nature Communications.

[60]  Lianzhou Wang,et al.  Recent advances in 2D materials for photocatalysis. , 2016, Nanoscale.

[61]  A. C. Bose,et al.  Hydrothermally Synthesized h-MoO3 and α-MoO3 Nanocrystals: New Findings on Crystal-Structure-Dependent Charge Transport , 2016 .

[62]  Tejs Vegge,et al.  Electroreduction of N2 to ammonia at ambient conditions on mononitrides of Zr, Nb, Cr, and V – A DFT guide for experiments , 2016 .

[63]  Arnolds Ubelis,et al.  Application of 2D Non-Graphene Materials and 2D Oxide Nanostructures for Biosensing Technology , 2016, Sensors.

[64]  Fei Wang,et al.  Nanometre-thick single-crystalline nanosheets grown at the water–air interface , 2016, Nature Communications.

[65]  Ying Li,et al.  Engineering Coexposed {001} and {101} Facets in Oxygen-Deficient TiO2 Nanocrystals for Enhanced CO2 Photoreduction under Visible Light , 2016 .

[66]  Yi Xie,et al.  Ultrathin Co3O4 Layers Realizing Optimized CO2 Electroreduction to Formate. , 2016, Angewandte Chemie.

[67]  Jong‐Sung Yu,et al.  A new approach to prepare highly active and stable black titania for visible light-assisted hydrogen production , 2015 .

[68]  F. Chou,et al.  Electronic structure and lattice dynamics of LixCoO2 single crystals , 2015 .

[69]  Wei Chen,et al.  Accurate band gaps of extended systems via efficient vertex corrections in G W , 2015 .

[70]  Christopher S. Johnson,et al.  Nanostructured Layered Cathode for Rechargeable Mg-Ion Batteries. , 2015, ACS nano.

[71]  In Young Kim,et al.  An Effective Way to Optimize the Functionality of Graphene-Based Nanocomposite: Use of the Colloidal Mixture of Graphene and Inorganic Nanosheets , 2015, Scientific Reports.

[72]  M. Schilfgaarde,et al.  Quasiparticle self-consistent G W calculations of the electronic band structure of bulk and monolayer V 2 O 5 , 2015 .

[73]  Renzhi Ma,et al.  Two-dimensional oxide and hydroxide nanosheets: controllable high-quality exfoliation, molecular assembly, and exploration of functionality. , 2015, Accounts of chemical research.

[74]  J. Robertson,et al.  Origin of the high work function and high conductivity of MoO3 , 2014 .

[75]  J. White,et al.  Chemical delithiation and exfoliation of LixCoO2 , 2014, Journal of solid state chemistry.

[76]  T. Ishihara,et al.  Direct imaging of light emission centers in two-dimensional crystals and their luminescence and photocatalytic properties. , 2014, Angewandte Chemie.

[77]  Lianzhou Wang,et al.  Unique Advantages of Exfoliated 2D Nanosheets for Tailoring the Functionalities of Nanocomposites. , 2014, The journal of physical chemistry letters.

[78]  Seong‐Ju Hwang,et al.  A direct hybridization between isocharged nanosheets of layered metal oxide and graphene through a surface-modification assembly process. , 2014, Chemistry.

[79]  Yi-sheng Liu,et al.  Air stable p-doping of WSe2 by covalent functionalization. , 2014, ACS nano.

[80]  Hiroyuki Hirayama,et al.  Epitaxial growth of silicene on ultra-thin Ag(111) films , 2014 .

[81]  Zaicheng Sun,et al.  A facile and versatile method for preparation of colored TiO2 with enhanced solar-driven photocatalytic activity. , 2014, Nanoscale.

[82]  Yi Xie,et al.  Spatial location engineering of oxygen vacancies for optimized photocatalytic H2 evolution activity. , 2014, Small.

[83]  J. Robertson,et al.  Metal Oxide Induced Charge Transfer Doping and Band Alignment of Graphene Electrodes for Efficient Organic Light Emitting Diodes , 2014, Scientific Reports.

[84]  B. Pan,et al.  Oxygen vacancies confined in ultrathin indium oxide porous sheets for promoted visible-light water splitting. , 2014, Journal of the American Chemical Society.

[85]  T. Kotani,et al.  Quasiparticle Self-Consistent GW Method Based on the Augmented Plane-Wave and Muffin-Tin Orbital Method , 2014, 1404.2804.

[86]  Hua Zhang,et al.  25th Anniversary Article: Hybrid Nanostructures Based on Two‐Dimensional Nanomaterials , 2014, Advanced materials.

[87]  A. Xu,et al.  Stable blue TiO2−x nanoparticles for efficient visible light photocatalysts , 2014 .

[88]  Likai Li,et al.  Black phosphorus field-effect transistors. , 2014, Nature nanotechnology.

[89]  W. Lambrecht,et al.  Phonons and related spectra in bulk and monolayer V2O5 , 2014 .

[90]  Kourosh Kalantar-Zadeh,et al.  Field effect biosensing platform based on 2D α-MoO(3). , 2013, ACS nano.

[91]  B. Pan,et al.  Atomically thin tin dioxide sheets for efficient catalytic oxidation of carbon monoxide. , 2013, Angewandte Chemie.

[92]  A. Kuwabara,et al.  Impact of lithium-ion ordering on surface electronic states of Li(x)CoO2. , 2013, Physical review letters.

[93]  G. Sawatzky,et al.  Role of oxygen holes in Li(x)CoO(2) revealed by soft X-ray spectroscopy. , 2013, Physical review letters.

[94]  Chong Xiao,et al.  Vacancy associates promoting solar-driven photocatalytic activity of ultrathin bismuth oxychloride nanosheets. , 2013, Journal of the American Chemical Society.

[95]  J. Coleman,et al.  Liquid Exfoliation of Layered Materials , 2013, Science.

[96]  A. Hernando,et al.  Room-Temperature Ferromagnetism in Reduced Rutile TiO2−δ Nanoparticles , 2013 .

[97]  M. Marques,et al.  Strong renormalization of the electronic band gap due to lattice polarization in the GW formalism. , 2013, Physical review letters.

[98]  M. Strano,et al.  Enhanced Charge Carrier Mobility in Two‐Dimensional High Dielectric Molybdenum Oxide , 2013, Advanced materials.

[99]  A. Krasheninnikov,et al.  Effects of confinement and environment on the electronic structure and exciton binding energy of MoS2 from first principles , 2012 .

[100]  H. Hwang,et al.  Nanostructured thermoelectric cobalt oxide by exfoliation/restacking route , 2012 .

[101]  A. Kahn,et al.  Transition Metal Oxides for Organic Electronics: Energetics, Device Physics and Applications , 2012, Advanced materials.

[102]  Jiehua Liu,et al.  Two‐Dimensional Nanoarchitectures for Lithium Storage , 2012, Advanced materials.

[103]  M. Marelli,et al.  Effect of nature and location of defects on bandgap narrowing in black TiO2 nanoparticles. , 2012, Journal of the American Chemical Society.

[104]  F. Chou,et al.  Electronic phase diagram of Li xCoO 2 revisited with potentiostatically deintercalated single crystals , 2012, 1201.2248.

[105]  Minoru Osada,et al.  Two‐Dimensional Dielectric Nanosheets: Novel Nanoelectronics From Nanocrystal Building Blocks , 2012, Advanced materials.

[106]  N. Gharbi,et al.  Synthesis and Electrical Properties of Well-Ordered Layered α-MoO3 Nanosheets , 2011 .

[107]  J. Attfield,et al.  Charge order and three-site distortions in the Verwey structure of magnetite , 2011, Nature.

[108]  T. Ishihara,et al.  Synthesis and photocatalytic activity of rhodium-doped calcium niobate nanosheets for hydrogen production from a water/methanol system without cocatalyst loading. , 2011, Journal of the American Chemical Society.

[109]  Barry P Rand,et al.  Solution-processed MoO₃ thin films as a hole-injection layer for organic solar cells. , 2011, ACS applied materials & interfaces.

[110]  A. Kahn,et al.  Electronic structure of Vanadium pentoxide: An efficient hole injector for organic electronic materials , 2011 .

[111]  D. Mohanty,et al.  Comparison of magnetic properties in LixCoO2 and its decomposition products LiCo2O4 and Co3O4 , 2011 .

[112]  Á. Rubio,et al.  Dielectric screening in two-dimensional insulators: Implications for excitonic and impurity states in graphane , 2011, 1104.3346.

[113]  V. Eyert VO2: a novel view from band theory. , 2011, Physical review letters.

[114]  A. Radenović,et al.  Single-layer MoS2 transistors. , 2011, Nature nanotechnology.

[115]  Xiaobo Chen,et al.  Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals , 2011, Science.

[116]  Julio Gómez-Herrero,et al.  2D materials: to graphene and beyond. , 2011, Nanoscale.

[117]  S. Beke A review of the growth of V2O5 films from 1885 to 2010 , 2011 .

[118]  R. Ma,et al.  Nanosheets of Oxides and Hydroxides: Ultimate 2D Charge‐Bearing Functional Crystallites , 2010, Advanced materials.

[119]  L. Curtiss,et al.  A Theoretical Study of CO2 Anions on Anatase (101) Surface , 2010 .

[120]  H. Ohta,et al.  Metal-nonmetal transition inLixCoO2thin films and thermopower enhancement at high Li concentration , 2010, 1008.4635.

[121]  A. Sehirlioglu,et al.  Doping of BiScO3–PbTiO3 Ceramics for Enhanced Properties , 2010 .

[122]  K. Miyoshi,et al.  Magnetic and electronic properties of LixCoO2 single crystals , 2010, 1005.4253.

[123]  J. Shan,et al.  Atomically thin MoS₂: a new direct-gap semiconductor. , 2010, Physical review letters.

[124]  Wojtek Wlodarski,et al.  Gas sensing properties of thermally evaporated lamellar MoO3 , 2010 .

[125]  Christoph Friedrich,et al.  Efficient implementation of the GW approximation within the all-electron FLAPW method , 2010, 1003.0316.

[126]  R. Hatton,et al.  Increased efficiency of small molecule photovoltaic cells by insertion of a MoO3 hole-extracting layer , 2010 .

[127]  Dane Morgan,et al.  Ab initio energetics of LaBO3(001) (B=Mn, Fe, Co, and Ni) for solid oxide fuel cell cathodes , 2009 .

[128]  S. Hyun,et al.  Soft-chemical exfoliation route to layered cobalt oxide monolayers and its application for film deposition and nanoparticle synthesis. , 2009, Chemistry.

[129]  S. Kikkawa,et al.  Electronic phase diagram of the layered cobalt oxide system LixCoO2 (0.0≤x≤1.0) , 2009, 0909.3556.

[130]  Jun Sugiyama,et al.  Li diffusion in LixCoO2 probed by muon-spin spectroscopy. , 2009, Physical review letters.

[131]  D. Murphy,et al.  Interaction of molecular oxygen with oxygen vacancies on reduced TiO2: Site specific blocking by probe molecules , 2009 .

[132]  Q. Kuang,et al.  Synthesis of titania nanosheets with a high percentage of exposed (001) facets and related photocatalytic properties. , 2009, Journal of the American Chemical Society.

[133]  Frank E. Osterloh,et al.  K4Nb6O17-derived photocatalysts for hydrogen evolution from water: Nanoscrolls versus nanosheets , 2008 .

[134]  A. Walsh,et al.  An ab initio Study of Reduction of V2O5 through the Formation of Oxygen Vacancies and Li Intercalation , 2008 .

[135]  G. Kresse,et al.  Accurate quasiparticle spectra from self-consistent GW calculations with vertex corrections. , 2007, Physical review letters.

[136]  R. Cava,et al.  Magnetism and structure of LixCoO2 and comparison to NaxCoO2 , 2007, 0710.3767.

[137]  A. Amato,et al.  Magnetic phase diagram of layered cobalt dioxide LixCoO2. , 2007, Physical review letters.

[138]  A. Ragauskas,et al.  Selective aerobic oxidation of activated alcohols into acids or aldehydes in ionic liquids. , 2007, The Journal of organic chemistry.

[139]  M. Chiesa,et al.  Carbon dioxide activation by surface excess electrons: an EPR study of the CO2- radical ion adsorbed on the surface of MgO. , 2007, Chemistry.

[140]  T. Kotani,et al.  Quasiparticle self-consistent GW method : A basis for the independent-particle approximation , 2006, cond-mat/0611002.

[141]  J. Robertson High dielectric constant gate oxides for metal oxide Si transistors , 2006 .

[142]  G. Sberveglieri,et al.  Gas sensing properties of MoO3 nanorods to CO and CH3OH , 2005 .

[143]  T. Imai,et al.  17O NMR studies of a triangular-lattice superconductor NaxCoO2 x yH(2)O. , 2005, Physical review letters.

[144]  T. Kotani,et al.  Quasiparticle self-consistent GW theory. , 2005, Physical review letters.

[145]  Andre K. Geim,et al.  Electric Field Effect in Atomically Thin Carbon Films , 2004, Science.

[146]  M. Whittingham,et al.  Lithium batteries and cathode materials. , 2004, Chemical reviews.

[147]  P. Werner,et al.  Structure of a high-pressure phase of vanadium pentoxide, β-V2O5 , 2004 .

[148]  M. Willinger,et al.  Geometric and electronic structure of ?-V2O5: Comparison between a-V2O5 and ?-V2O5 , 2004 .

[149]  T. Punniyamurthy,et al.  Novel vanadium-catalyzed oxidation of alcohols to aldehydes and ketones under atmospheric oxygen. , 2004, Organic letters.

[150]  Alex Zunger,et al.  Practical doping principles , 2003 .

[151]  R. Cava,et al.  Superconductivity phase diagram of NaxCoO2·1.3H2O , 2003, Nature.

[152]  Kazunori Takada,et al.  Superconductivity in two-dimensional CoO2 layers , 2003, Nature.

[153]  Mamoru Watanabe,et al.  Redoxable nanosheet crystallites of MnO2 derived via delamination of a layered manganese oxide. , 2003, Journal of the American Chemical Society.

[154]  C. Delmas,et al.  Combined Effects of Ni and Li Doping on the Phase Transitions in Li x CoO2 Electrochemical and 7 Li Nuclear Magnetic Resonance Studies , 2002 .

[155]  J. Nørskov,et al.  Oxygen vacancies as active sites for water dissociation on rutile TiO(2)(110). , 2001, Physical review letters.

[156]  Fred P. Klemens,et al.  Multi-component high-K gate dielectrics for the silicon industry , 2001 .

[157]  Gopinath,et al.  A catalytic oxidative esterification of aldehydes using V2O5-H2O2 , 2000, Organic letters.

[158]  Zhaolin Liu,et al.  Synthesis and characterization of LiNi1−x−yCoxMnyO2 as the cathode materials of secondary lithium batteries , 1999 .

[159]  Young-Il Jang,et al.  TEM Study of Electrochemical Cycling‐Induced Damage and Disorder in LiCoO2 Cathodes for Rechargeable Lithium Batteries , 1999 .

[160]  Christopher M Wolverton,et al.  First-Principles Prediction of Vacancy Order-Disorder and Intercalation Battery Voltages in Li x CoO 2 , 1998 .

[161]  T. Sasaki,et al.  Osmotic Swelling to Exfoliation. Exceptionally High Degrees of Hydration of a Layered Titanate , 1998 .

[162]  Jiannian Yao,et al.  Enhancement of Photochromism and Electrochromism in MoO3/Au and MoO3/Pt Thin Films , 1998 .

[163]  C. Geibel,et al.  NaV2O5 as a Quarter-Filled Ladder Compound , 1998, cond-mat/9801276.

[164]  A. West,et al.  Electronic Conductivity of LiCoO2 and Its Enhancement by Magnesium Doping , 1997 .

[165]  Fujita,et al.  Edge state in graphene ribbons: Nanometer size effect and edge shape dependence. , 1996, Physical review. B, Condensed matter.

[166]  M. Isobe,et al.  Magnetic Susceptibility of Quasi-One-Dimensional Compound α'- NaV2O5 –Possible Spin-Peierls Compound with High Critical Temperature of 34 K– , 1996 .

[167]  J. Lassègues,et al.  Infrared and Raman spectra of MoO 3 molybdenum trioxides and MoO 3 · xH 2O molybdenum trioxide hydrates , 1995 .

[168]  Michael M. Thackeray,et al.  Spinel versus layered structures for lithium cobalt oxide synthesised at 400°C , 1993 .

[169]  J. Galy Vanadium pentoxide and vanadium oxide bronzes—Structural chemistry of single (S) and double (D) layer MxV2O5 phases , 1992 .

[170]  Tadeusz Bak,et al.  Modification in the electronic structure of cobalt bronze LixCoO2 and the resulting electrochemical properties , 1989 .

[171]  S. Kikkawa,et al.  Deintercalated NaCoO2 and LiCoO2 , 1986 .

[172]  P. Wiseman,et al.  Cobalt(III) lithium oxide, CoLiO2: structure refinement by powder neutron diffraction , 1984 .

[173]  B. Djafari-Rouhani,et al.  On the origin of the split-off conduction bands in V2O5 , 1981 .

[174]  M. Sayer,et al.  Long-range potential centres in disordered solids , 1978 .

[175]  Richard S. Crandall,et al.  Optical properties of mixed‐oxide WO3/MoO3 electrochromic films , 1977 .

[176]  D. K. Chakrabarty,et al.  Electrical properties of vanadium pentoxide doped with lithium and sodium in the α-phase range , 1976 .

[177]  H. J. Zeiger Unified model of the insulator-metal transition in Ti 2 O 3 and the high-temperature transitions in V 2 O 3 , 1975 .

[178]  P. Hagenmuller,et al.  Propriétés electriques et magnétiques des bronzes oxyfluorés de vanadium de formule α′-NaV2O5−xFx (0 ⩽ x ⩽ 1) , 1972 .

[179]  W. Mumme,et al.  The crystal structure of reduced cesium vanadate, CsV2O5 , 1971 .

[180]  L. Hedin NEW METHOD FOR CALCULATING THE ONE-PARTICLE GREEN'S FUNCTION WITH APPLICATION TO THE ELECTRON-GAS PROBLEM , 1965 .

[181]  E. Abbott,et al.  Flatland: a Romance of Many Dimensions , 1884, Nature.

[182]  R. Ma,et al.  Two-dimensional organic–inorganic superlattice-like heterostructures for energy storage applications , 2020, Energy & Environmental Science.

[183]  W. Hager,et al.  and s , 2019, Shallow Water Hydraulics.

[184]  J. Gómez‐Herrero,et al.  Recent Progress on Antimonene: A New Bidimensional Material , 2018, Advanced materials.

[185]  Adam F. Chrimes,et al.  High‐Performance Field Effect Transistors Using Electronic Inks of 2D Molybdenum Oxide Nanoflakes , 2016 .

[186]  Churna Bhandari FIRST-PRINCIPLES STUDY OF ELECTRONIC AND VIBRATIONAL PROPERTIES OF BULK AND MONOLAYER V2O5 , 2016 .

[187]  M. Si,et al.  Mechanisms of current fl uctuation in ambipolar black phosphorus fi eld-e ff ect transistors , 2016 .

[188]  K. Miyoshi,et al.  Enhanced Electrical Resistivity after Rapid Cool of the Specimen in Layered Oxide LixCoO2 , 2015 .

[189]  Yi Xie,et al.  Ultrathin Co 3 O 4 Layers Realizing Optimized CO 2 Electroreduction to Formate , 2015 .

[190]  Jin-seong Park,et al.  Review of recent developments in amorphous oxide semiconductor thin-film transistor devices , 2012 .

[191]  W. Marsden I and J , 2012 .

[192]  R. Cava,et al.  Magnetism and structure of Li x CoO 2 and comparison to Na x CoO , 2008 .

[193]  Esmat F. Saad Dielectric properties of molybdenum oxide thin films , 2005 .

[194]  Stephane Levasseur,et al.  The insulator-metal transition upon lithium deintercalation from LiCoO2: electronic properties and 7Li NMR study , 1999 .

[195]  M. Isobe,et al.  Magnetic properties of AV2O5 (A = Li, Na, Cs, Ca and Mg) , 1998 .

[196]  S. Capone,et al.  PROPERTIES OF VANADIUM OXIDE THIN FILMS FOR ETHANOL SENSOR , 1997 .

[197]  N. Takano,et al.  An explanation of anisotropy in electrical conductivity of V2O5 due to overlap integrals , 1997 .

[198]  L. Hedin,et al.  Effects of Electron-Electron and Electron-Phonon Interactions on the One-Electron States of Solids , 1969 .