Mg-induced increase of band gap in Zn1-xMgxO nanorods revealed by x-ray absorption and emission spectroscopy

J. W. Chiou; H. M. Tsai; C. W. Pao; F. Z. Chien; W. F. Pong; C. W. Chen; M. H. Tsai; J. J. Wu; C. H. Ko; H. H. Chiang; H. J. Lin; J. F. Lee; J. H. Guo

doi:10.1063/1.2951939

Mg-induced increase of band gap in Zn_1-xMg_xO nanorods revealed by x-ray absorption and emission spectroscopy

J. W. Chiou, H. M. Tsai, C. W. Pao, F. Z. Chien, W. F. Pong, C. W. Chen, M. H. Tsai, J. J. Wu, C. H. Ko, H. H. Chiang, H. J. Lin, J. F. Lee, J. H. Guo

Department of Chemical Engineering

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

29 Citations (Scopus)

Abstract

X-ray absorption near-edge structure (XANES) and x-ray emission spectroscopy (XES) measurements were used to investigate the effect of Mg doping in ZnO nanorods. The intensities of the features in the O K -edge XANES spectra of Zn_1-xMg_xO nanorods are lower than those of pure ZnO nanorods, suggesting that Mg doping increases the negative effective charge of O ions. XES and XANES spectra of O 2p states indicate that Mg doping raises (lowers) the conduction-band-minimum (valence-band-maximum) and increases the band gap. The band gap is found to increase linearly with the Mg content, as revealed by photoluminescence and combined XANES and XES measurements.

Original language	English
Article number	013709
Journal	Journal of Applied Physics
Volume	104
Issue number	1
DOIs	https://doi.org/10.1063/1.2951939
Publication status	Published - 2008

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1063/1.2951939

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@article{acb8ac6570794352a14e6aa619005ca5,

title = "Mg-induced increase of band gap in Zn1-xMgxO nanorods revealed by x-ray absorption and emission spectroscopy",

abstract = "X-ray absorption near-edge structure (XANES) and x-ray emission spectroscopy (XES) measurements were used to investigate the effect of Mg doping in ZnO nanorods. The intensities of the features in the O K -edge XANES spectra of Zn1-xMgxO nanorods are lower than those of pure ZnO nanorods, suggesting that Mg doping increases the negative effective charge of O ions. XES and XANES spectra of O 2p states indicate that Mg doping raises (lowers) the conduction-band-minimum (valence-band-maximum) and increases the band gap. The band gap is found to increase linearly with the Mg content, as revealed by photoluminescence and combined XANES and XES measurements.",

author = "Chiou, {J. W.} and Tsai, {H. M.} and Pao, {C. W.} and Chien, {F. Z.} and Pong, {W. F.} and Chen, {C. W.} and Tsai, {M. H.} and Wu, {J. J.} and Ko, {C. H.} and Chiang, {H. H.} and Lin, {H. J.} and Lee, {J. F.} and Guo, {J. H.}",

note = "Funding Information: One of the authors (W.F.P.) would like to thank the National Science Council of Taiwan for financially supporting this research under Contract No. NSC96-2112-M032-012-MY3. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.",

year = "2008",

doi = "10.1063/1.2951939",

language = "English",

volume = "104",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

number = "1",

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TY - JOUR

T1 - Mg-induced increase of band gap in Zn1-xMgxO nanorods revealed by x-ray absorption and emission spectroscopy

AU - Chiou, J. W.

AU - Tsai, H. M.

AU - Pao, C. W.

AU - Chien, F. Z.

AU - Pong, W. F.

AU - Chen, C. W.

AU - Tsai, M. H.

AU - Wu, J. J.

AU - Ko, C. H.

AU - Chiang, H. H.

AU - Lin, H. J.

AU - Lee, J. F.

AU - Guo, J. H.

N1 - Funding Information: One of the authors (W.F.P.) would like to thank the National Science Council of Taiwan for financially supporting this research under Contract No. NSC96-2112-M032-012-MY3. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.

PY - 2008

Y1 - 2008

N2 - X-ray absorption near-edge structure (XANES) and x-ray emission spectroscopy (XES) measurements were used to investigate the effect of Mg doping in ZnO nanorods. The intensities of the features in the O K -edge XANES spectra of Zn1-xMgxO nanorods are lower than those of pure ZnO nanorods, suggesting that Mg doping increases the negative effective charge of O ions. XES and XANES spectra of O 2p states indicate that Mg doping raises (lowers) the conduction-band-minimum (valence-band-maximum) and increases the band gap. The band gap is found to increase linearly with the Mg content, as revealed by photoluminescence and combined XANES and XES measurements.

AB - X-ray absorption near-edge structure (XANES) and x-ray emission spectroscopy (XES) measurements were used to investigate the effect of Mg doping in ZnO nanorods. The intensities of the features in the O K -edge XANES spectra of Zn1-xMgxO nanorods are lower than those of pure ZnO nanorods, suggesting that Mg doping increases the negative effective charge of O ions. XES and XANES spectra of O 2p states indicate that Mg doping raises (lowers) the conduction-band-minimum (valence-band-maximum) and increases the band gap. The band gap is found to increase linearly with the Mg content, as revealed by photoluminescence and combined XANES and XES measurements.

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JO - Journal of Applied Physics

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Mg-induced increase of band gap in Zn_1-xMg_xO nanorods revealed by x-ray absorption and emission spectroscopy

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