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

Coleman X. Kronawitter; Samuel S. Mao; Bonnie R. Antoun

doi:10.1063/1.3552711

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

Coleman X. Kronawitter, Samuel S. Mao, Bonnie R. Antoun

Mechanical & Nuclear Engineering

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

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.

Original language	British English
Article number	092108
Journal	Applied Physics Letters
Volume	98
Issue number	9
DOIs	https://doi.org/10.1063/1.3552711
State	Published - 28 Feb 2011

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

abstract = "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.",

author = "Kronawitter, {Coleman X.} and Mao, {Samuel S.} and Antoun, {Bonnie R.}",

note = "Funding Information: This work was supported by Sandia National Laboratories. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Co., for the United States Department of Energy under Contract No. DE-ACO4-94AL85000. ",

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AU - Kronawitter, Coleman X.

AU - Mao, Samuel S.

AU - Antoun, Bonnie R.

N1 - Funding Information: This work was supported by Sandia National Laboratories. Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Co., for the United States Department of Energy under Contract No. DE-ACO4-94AL85000.

PY - 2011/2/28

Y1 - 2011/2/28

N2 - 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.

AB - 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.

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VL - 98

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 9

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ER -

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

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