Doped, porous iron oxide films and their optical functions and anodic photocurrents for solar water splitting

Journal Article · Mon Feb 28 00:00:00 EST 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3552711· OSTI ID:21518300

Kronawitter, Coleman X; Mao, Samuel S ^[1]; Antoun, Bonnie R ^[2]

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1. Department of Mechanical Engineering, University of California at Berkeley, Berkeley, California 94720, USA and Environmental Energy Technologies Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
2. Sandia National Laboratories, Livermore, California 94551 (United States)

The fabrication and morphological, optical, and photoelectrochemical characterization of doped iron oxide films is presented. The complex index of refraction and absorption coefficient of polycrystalline films are determined through measurement and modeling of spectral transmission and reflection data using appropriate dispersion relations. Photoelectrochemical characterization for water photo-oxidation reveals that the conversion efficiencies of electrodes are strongly influenced by substrate temperature during their oblique-angle physical vapor deposition. These results are discussed in terms of the films' morphological features and the known optoelectronic limitations of iron oxide films for application in solar water splitting devices.

• OSTI ID: 21518300
• Journal Information: Applied Physics Letters, Vol. 98, Issue 9; Other Information: DOI: 10.1063/1.3552711; (c) 2011 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ANODIZATION
DOPED MATERIALS
IRON OXIDES
OPTICAL PROPERTIES
PHOTOCONDUCTIVITY
PHOTOCURRENTS
PHOTOELECTROCHEMICAL CELLS
PHOTOEMISSION
PHYSICAL VAPOR DEPOSITION
POLYCRYSTALS
POROUS MATERIALS
REFLECTION
REFRACTIVE INDEX
SIMULATION
SUBSTRATES
THIN FILMS
TRANSMISSION
WATER
CHALCOGENIDES
CHEMICAL COATING
CORROSION PROTECTION
CRYSTALS
CURRENTS
DEPOSITION
ELECTRIC CONDUCTIVITY
ELECTRIC CURRENTS
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTROCHEMICAL COATING
ELECTROLYSIS
EMISSION
FILMS
HYDROGEN COMPOUNDS
IRON COMPOUNDS
LYSIS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SECONDARY EMISSION
SORPTION
SURFACE COATING
TRANSITION ELEMENT COMPOUNDS