skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Design of Semiconducting Tetrahedral Mn 1 x Zn x O Alloys and Their Application to Solar Water Splitting

Journal Article · · Physical Review. X

Transition metal oxides play important roles as contact and electrode materials, but their use as active layers in solar energy conversion requires achieving semiconducting properties akin to those of conventional semiconductors like Si or GaAs. In particular, efficient bipolar carrier transport is a challenge in these materials. Based on the prediction that a tetrahedral polymorph of MnO should have such desirable semiconducting properties, and the possibility to overcome thermodynamic solubility limits by nonequilibrium thin-film growth, we exploit both structure-property and composition-structure relationships to design and realize novel wurtzite-structure Mn1₋xZnxO alloys. At Zn compositions above x≈0.3, thin films of these alloys assume the tetrahedral wurtzite structure instead of the octahedral rocksalt structure of MnO, thereby enabling semiconductor properties that are unique among transition metal oxides, i.e., a band gap within the visible spectrum, a band-transport mechanism for both electron and hole carriers, electron doping, and a band lineup suitable for solar hydrogen generation. In conclusion, a proof of principle is provided by initial photo-electrocatalytic device measurements, corroborating, in particular, the predicted favorable hole-transport properties of these alloys.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Next Generation of Materials by Design: Incorporating Metastability (CNGMD)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1182803
Alternate ID(s):
OSTI ID: 1220582
Report Number(s):
NREL/JA-5K00-60832; PRXHAE; 021016
Journal Information:
Physical Review. X, Journal Name: Physical Review. X Vol. 5 Journal Issue: 2; ISSN 2160-3308
Publisher:
American Physical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 56 works
Citation information provided by
Web of Science

References (61)

Dielectric properties and excitons for extended systems from hybrid functionals journal September 2008
Electrons in lattice fields journal July 1954
Achieving high free electron mobility in ZnO:Al thin films grown by reactive pulsed magnetron sputtering journal January 2009
Generalized Gradient Approximation Made Simple journal October 1996
Photoelectrochemical cells journal November 2001
Non-equilibrium origin of high electrical conductivity in gallium zinc oxide thin films journal December 2013
An ab initio model of electron transport in hematite (α-Fe2O3) basal planes journal April 2003
Holes bound as small polarons to acceptor defects in oxide materials: why are their thermal ionization energies so high? journal August 2011
Cation off-stoichiometry leads to high p -type conductivity and enhanced transparency in Co 2 ZnO 4 and Co 2 NiO 4 thin films journal February 2012
Polymorphic energy ordering of MgO, ZnO, GaN, and MnO within the random phase approximation journal May 2013
Electronic properties of random alloys: Special quasirandom structures journal November 1990
Grand challenges in basic energy sciences journal July 2008
Recent advances in ZnO materials and devices journal March 2001
Angle-resolved photoemission and quasiparticle calculation of ZnO: The need for d band shift in oxide semiconductors journal December 2012
New Crystal Structure: Synthesis and Characterization of Hexagonal Wurtzite MnO journal May 2012
Using design principles to systematically plan the synthesis of hole-conducting transparent oxides: Cu 3 VO 4 and Ag 3 VO 4 as a case study journal October 2011
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Electronic Correlation in Anion p Orbitals Impedes Ferromagnetism due to Cation Vacancies in Zn Chalcogenides journal July 2009
Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study journal January 1998
The electrical properties of polycrystalline silicon films journal December 1975
Experimental Characterization of a Theoretically Designed Candidate p-Type Transparent Conducting Oxide: Li-Doped Cr 2 MnO 4 journal July 2014
Physical Chemistry of Semiconductor−Liquid Interfaces journal January 1996
Self-Compensation Limited Conductivity in Binary Semiconductors. I. Theory journal May 1964
Energetic stability and magnetic properties of MnO in the rocksalt, wurtzite, and zinc-blende structures: Influence of exchange and correlation journal October 2010
Polaronic hole localization and multiple hole binding of acceptors in oxide wide-gap semiconductors journal August 2009
Multicomponent multisublattice alloys, nonconfigurational entropy and other additions to the Alloy Theoretic Automated Toolkit journal June 2009
Studies of polaron motion journal November 1959
Semiconducting transition-metal oxides based on d 5 cations: Theory for MnO and Fe 2 O 3 journal May 2012
Density-functional study of the structure and stability of ZnO surfaces journal January 2003
Li-Doped Cr 2 MnO 4 : A New p-Type Transparent Conducting Oxide by Computational Materials Design journal May 2013
Zinc oxide-based diluted magnetic semiconductors journal February 2005
On the Absorption Spectra of Complex Ions II journal September 1954
Dynamics of photogenerated holes in nanocrystalline α-Fe 2 O 3 electrodes for water oxidation probed by transient absorption spectroscopy journal January 2011
Solar Water Splitting: Progress Using Hematite (α-Fe2O3) Photoelectrodes journal March 2011
Onset of magnetic order in strongly-correlated systems from ab initio electronic structure calculations: application to transition metal oxides journal June 2008
Ab initio study of electron and hole transport in pure and doped MnO and MnO:ZnO alloy journal January 2013
New Method for Calculating the One-Particle Green's Function with Application to the Electron-Gas Problem journal August 1965
Localization and Delocalization Errors in Density Functional Theory and Implications for Band-Gap Prediction journal April 2008
Metallic conductivity and metal-semiconductor transition in Ga-doped ZnO journal January 2006
STM study of the geometric and electronic structure of ZnO()-Zn, ()-O, (), and () surfaces journal November 2002
Local Antiferromagnetic Order in Single-Crystal MnO above the Néel Temperature journal July 1966
Non-equilibrium deposition of phase pure Cu 2 O thin films at reduced growth temperature journal February 2014
Linear optical properties in the projector-augmented wave methodology journal January 2006
Predicting polaronic defect states by means of generalized Koopmans density functional calculations journal September 2010
Optical and structural properties of epitaxial MgxZn1−xO alloys journal November 1999
Band Gap Engineering of MnO via ZnO Alloying: A Potential New Visible-Light Photocatalyst journal April 2012
A Monolithic Photovoltaic-Photoelectrochemical Device for Hydrogen Production via Water Splitting journal April 1998
Zn–Ni–Co–O wide-band-gap p-type conductive oxides with high work functions journal August 2011
Enhanced Electron Mobility Due to Dopant-Defect Pairing in Conductive ZnMgO journal January 2014
Small-polaron versus band conduction in some transition-metal oxides journal January 1970
Assessing capability of semiconductors to split water using ionization potentials and electron affinities only journal January 2014
Berry-phase treatment of the homogeneous electric field perturbation in insulators journal March 2001
The effect of lattice vibrations on substitutional alloy thermodynamics journal January 2002
Development and application of an instrument for spatially resolved Seebeck coefficient measurements journal May 2013
The solubility of transition metal oxides in zinc oxide and the reflectance spectra of Mn2+ and Fe2+ in tetrahedral fields journal February 1966
How Does Chemistry Influence Electron Effective Mass in Oxides? A High-Throughput Computational Analysis journal September 2014
Quasiparticle band structures of the antiferromagnetic transition-metal oxides MnO, FeO, CoO, and NiO journal June 2009
VMD: Visual molecular dynamics journal February 1996
Implementation and performance of the frequency-dependent G W method within the PAW framework journal July 2006
Highly Improved Quantum Efficiencies for Thin Film BiVO 4 Photoanodes journal August 2011
Electrical transport parameters of heavily-doped zinc oxide and zinc magnesium oxide single and multilayer films heteroepitaxially grown on oxide single crystals journal February 2006