Photoelectrochemical study of thin anatase TiO{sub 2} films prepared by metallorganic chemical vapor deposition

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1837590· OSTI ID:509388

Boschloo, G K; Goossens, A; Schoonman, J ^[1]

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1. Delft Univ. of Technology (Netherlands). Lab. for Applied Inorganic Chemistry

Thin films of TiO{sub 2} have found application as antireflection coatings, transparent conductors, dielectrics, electrochromic films, and photoelectrodes. Titanium dioxide is also used as a self-cleaning coating on windows and tiles. Thin films of TiO{sub 2} have been prepared by metallorganic chemical vapor deposition. The resulting anatase films are highly resistive. By electrochemical doping, the donor density can easily be raised by two orders of magnitude, resulting in a conducting film. From optical and photocurrent measurements, an indirect bandgap of 3.26 eV is derived for polycrystalline anatase films. Electrolyte electroreflection reveals a direct optical transition of anatase at 3.8 eV. The anatase electrodes can be sensitized by zinc carboxyphenyl porphyrin.

• Sponsoring Organization: USDOE
• OSTI ID: 509388
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 4 Vol. 144; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
36 MATERIALS SCIENCE
CHEMICAL VAPOR DEPOSITION
DOPED MATERIALS
ELECTRICAL PROPERTIES
OPTICAL PROPERTIES
PHOTOCONDUCTIVITY
PHOTOCURRENTS
TITANIUM OXIDES
ULTRAVIOLET RADIATION
USES