Enhanced visible-light absorption in heavily nitrogen-doped TiO2

Q. Li; J. Xue; W. Liang; J. H. Huang; J. K. Shang

doi:10.1080/09500830801894516

Enhanced visible-light absorption in heavily nitrogen-doped TiO₂

Q. Li
, J. Xue
, W. Liang
, J. H. Huang
, J. K. Shang

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

Abstract

Heavy nitrogen doping of TiO2 thin films has been achieved by ion-beam-assisted deposition. The heavily doped films have a distorted anatase crystal structure and show an increase in visible-light absorption compared to films with only light nitrogen doping. The enhanced absorption is shown by a first-principles density-functional calculation to result from an electronic band-gap narrowing, in contrast to the appearance of isolated N 2p states above the valence-band maximum that occur with light nitrogen doping.

Original language	English (US)
Pages (from-to)	231-238
Number of pages	8
Journal	Philosophical Magazine Letters
Volume	88
Issue number	3
DOIs	https://doi.org/10.1080/09500830801894516
State	Published - Mar 2008
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

Online availability

10.1080/09500830801894516

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Cite this

@article{4602613f864b4be6b44b4ed1c22adb60,

title = "Enhanced visible-light absorption in heavily nitrogen-doped TiO2",

abstract = "Heavy nitrogen doping of TiO2 thin films has been achieved by ion-beam-assisted deposition. The heavily doped films have a distorted anatase crystal structure and show an increase in visible-light absorption compared to films with only light nitrogen doping. The enhanced absorption is shown by a first-principles density-functional calculation to result from an electronic band-gap narrowing, in contrast to the appearance of isolated N 2p states above the valence-band maximum that occur with light nitrogen doping.",

author = "Q. Li and J. Xue and W. Liang and Huang, \{J. H.\} and Shang, \{J. K.\}",

note = "This work was supported by the Center of Advanced Materials for the Purification of Water with Systems, National Science Foundation under Agreement Number CTS-0120978, the National Basic Research Program of China through Grant No. 2006CB601201, the Natural Science Foundation of Shanxi Province, China under Grant No. 2006011051, and the Specialized Research Fund for the Doctoral Program of Higher Education in China (SRFDP) under Grant No. 2005011200120. XPS and XRD measurements were carried out at the Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, under the partial support of the US Department of Energy under grant DEFG02-91-ER45439.",

year = "2008",

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doi = "10.1080/09500830801894516",

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T1 - Enhanced visible-light absorption in heavily nitrogen-doped TiO2

AU - Li, Q.

AU - Xue, J.

AU - Liang, W.

AU - Huang, J. H.

AU - Shang, J. K.

N1 - This work was supported by the Center of Advanced Materials for the Purification of Water with Systems, National Science Foundation under Agreement Number CTS-0120978, the National Basic Research Program of China through Grant No. 2006CB601201, the Natural Science Foundation of Shanxi Province, China under Grant No. 2006011051, and the Specialized Research Fund for the Doctoral Program of Higher Education in China (SRFDP) under Grant No. 2005011200120. XPS and XRD measurements were carried out at the Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, under the partial support of the US Department of Energy under grant DEFG02-91-ER45439.

PY - 2008/3

Y1 - 2008/3

N2 - Heavy nitrogen doping of TiO2 thin films has been achieved by ion-beam-assisted deposition. The heavily doped films have a distorted anatase crystal structure and show an increase in visible-light absorption compared to films with only light nitrogen doping. The enhanced absorption is shown by a first-principles density-functional calculation to result from an electronic band-gap narrowing, in contrast to the appearance of isolated N 2p states above the valence-band maximum that occur with light nitrogen doping.

AB - Heavy nitrogen doping of TiO2 thin films has been achieved by ion-beam-assisted deposition. The heavily doped films have a distorted anatase crystal structure and show an increase in visible-light absorption compared to films with only light nitrogen doping. The enhanced absorption is shown by a first-principles density-functional calculation to result from an electronic band-gap narrowing, in contrast to the appearance of isolated N 2p states above the valence-band maximum that occur with light nitrogen doping.

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