Electrical and optical properties of porous nanocrystalline TiO2 films

F. Cao; G. Oskam; P. C. Searson; J. M. Stipkala; T. A. Heimer; F. Farzad; G. J. Meyer

doi:10.1021/j100031a027

Electrical and optical properties of porous nanocrystalline TiO₂ films

F. Cao, G. Oskam, P. C. Searson, J. M. Stipkala, T. A. Heimer, F. Farzad, G. J. Meyer

Whiting School of Engineering

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

Abstract

The optical and electrochemical properties of nanocrystalline TiO₂ electrodes in acidic aqueous solution are reported. Cyclic voltammetry, UV/vis/NIR attenuance, EPR, photocurrent spectroscopy, and electrochemical impedance measurements are presented. At negative applied potentials the TiO₂ films turn black, and an EPR spectrum appears which we attribute to Ti(III) species. The results are described in terms of a model in which the reduction of TiO₂ leads to band edge unpinning.

Original language	English (US)
Pages (from-to)	11974-11980
Number of pages	7
Journal	Journal of Physical Chemistry
Volume	99
Issue number	31
DOIs	https://doi.org/10.1021/j100031a027
State	Published - 1995

ASJC Scopus subject areas

General Engineering
Physical and Theoretical Chemistry

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10.1021/j100031a027

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title = "Electrical and optical properties of porous nanocrystalline TiO2 films",

abstract = "The optical and electrochemical properties of nanocrystalline TiO2 electrodes in acidic aqueous solution are reported. Cyclic voltammetry, UV/vis/NIR attenuance, EPR, photocurrent spectroscopy, and electrochemical impedance measurements are presented. At negative applied potentials the TiO2 films turn black, and an EPR spectrum appears which we attribute to Ti(III) species. The results are described in terms of a model in which the reduction of TiO2 leads to band edge unpinning.",

author = "F. Cao and G. Oskam and Searson, {P. C.} and Stipkala, {J. M.} and Heimer, {T. A.} and F. Farzad and Meyer, {G. J.}",

year = "1995",

doi = "10.1021/j100031a027",

language = "English (US)",

volume = "99",

pages = "11974--11980",

journal = "Journal of Physical Chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

number = "31",

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TY - JOUR

T1 - Electrical and optical properties of porous nanocrystalline TiO2 films

AU - Cao, F.

AU - Oskam, G.

AU - Searson, P. C.

AU - Stipkala, J. M.

AU - Heimer, T. A.

AU - Farzad, F.

AU - Meyer, G. J.

PY - 1995

Y1 - 1995

N2 - The optical and electrochemical properties of nanocrystalline TiO2 electrodes in acidic aqueous solution are reported. Cyclic voltammetry, UV/vis/NIR attenuance, EPR, photocurrent spectroscopy, and electrochemical impedance measurements are presented. At negative applied potentials the TiO2 films turn black, and an EPR spectrum appears which we attribute to Ti(III) species. The results are described in terms of a model in which the reduction of TiO2 leads to band edge unpinning.

AB - The optical and electrochemical properties of nanocrystalline TiO2 electrodes in acidic aqueous solution are reported. Cyclic voltammetry, UV/vis/NIR attenuance, EPR, photocurrent spectroscopy, and electrochemical impedance measurements are presented. At negative applied potentials the TiO2 films turn black, and an EPR spectrum appears which we attribute to Ti(III) species. The results are described in terms of a model in which the reduction of TiO2 leads to band edge unpinning.

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UR - http://www.scopus.com/inward/citedby.url?scp=0029634663&partnerID=8YFLogxK

U2 - 10.1021/j100031a027

DO - 10.1021/j100031a027

M3 - Article

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VL - 99

SP - 11974

EP - 11980

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

IS - 31

ER -

Electrical and optical properties of porous nanocrystalline TiO₂ films

Abstract

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