X-ray photoelectron spectroscopic studies of zinc-tellurite glasses

G. D. Khattak; M. A. Salim

doi:10.1016/S0368-2048(01)00371-1

X-ray photoelectron spectroscopic studies of zinc-tellurite glasses

G. D. Khattak^*, M. A. Salim

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

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

46 Scopus citations

Abstract

Zinc-tellurite glasses with chemical composition [(ZnO)_x(TeO₂)_100-x], where x=25, 30 and 35 have been prepared and investigated by X-ray photoelectron spectroscopy (XPS). Zn 2p peaks shift by about 0.25 eV towards higher binding energy in the zinc-tellurite glasses in comparison to its value in ZnO powder, while the Te 3p, Te 3d, and O 1s core levels for the glasses remain essentially unchanged from those of TeO₂ powder. Each O 1s spectrum is deconvoluted into two peaks, in which the higher energy one is due to oxygen atoms in the hydroxides covering the sample surface. Although both bridging oxygen (BO) and non-bridging oxygen (NBO) atoms should certainly exist in these tellurite glasses, the electrons are delocalised in the NBO-Te-BO bonds which equalize the electronic density of the valence shell between BO and NBO atoms and make it difficult to distinguish.

Original language	English
Pages (from-to)	47-55
Number of pages	9
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	123
Issue number	1
DOIs	https://doi.org/10.1016/S0368-2048(01)00371-1
State	Published - Apr 2002

Keywords

Bridging oxygen
Non-bridging oxygen
XPS, Oxide glasses

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

Access to Document

10.1016/S0368-2048(01)00371-1

Cite this

@article{70318c0bcede408a8237bbad27566e88,

title = "X-ray photoelectron spectroscopic studies of zinc-tellurite glasses",

abstract = "Zinc-tellurite glasses with chemical composition [(ZnO)x(TeO2)100-x], where x=25, 30 and 35 have been prepared and investigated by X-ray photoelectron spectroscopy (XPS). Zn 2p peaks shift by about 0.25 eV towards higher binding energy in the zinc-tellurite glasses in comparison to its value in ZnO powder, while the Te 3p, Te 3d, and O 1s core levels for the glasses remain essentially unchanged from those of TeO2 powder. Each O 1s spectrum is deconvoluted into two peaks, in which the higher energy one is due to oxygen atoms in the hydroxides covering the sample surface. Although both bridging oxygen (BO) and non-bridging oxygen (NBO) atoms should certainly exist in these tellurite glasses, the electrons are delocalised in the NBO-Te-BO bonds which equalize the electronic density of the valence shell between BO and NBO atoms and make it difficult to distinguish.",

keywords = "Bridging oxygen, Non-bridging oxygen, XPS, Oxide glasses",

author = "Khattak, {G. D.} and Salim, {M. A.}",

year = "2002",

month = apr,

doi = "10.1016/S0368-2048(01)00371-1",

language = "English",

volume = "123",

pages = "47--55",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

issn = "0368-2048",

publisher = "Elsevier B.V.",

number = "1",

}

TY - JOUR

T1 - X-ray photoelectron spectroscopic studies of zinc-tellurite glasses

AU - Khattak, G. D.

AU - Salim, M. A.

PY - 2002/4

Y1 - 2002/4

N2 - Zinc-tellurite glasses with chemical composition [(ZnO)x(TeO2)100-x], where x=25, 30 and 35 have been prepared and investigated by X-ray photoelectron spectroscopy (XPS). Zn 2p peaks shift by about 0.25 eV towards higher binding energy in the zinc-tellurite glasses in comparison to its value in ZnO powder, while the Te 3p, Te 3d, and O 1s core levels for the glasses remain essentially unchanged from those of TeO2 powder. Each O 1s spectrum is deconvoluted into two peaks, in which the higher energy one is due to oxygen atoms in the hydroxides covering the sample surface. Although both bridging oxygen (BO) and non-bridging oxygen (NBO) atoms should certainly exist in these tellurite glasses, the electrons are delocalised in the NBO-Te-BO bonds which equalize the electronic density of the valence shell between BO and NBO atoms and make it difficult to distinguish.

AB - Zinc-tellurite glasses with chemical composition [(ZnO)x(TeO2)100-x], where x=25, 30 and 35 have been prepared and investigated by X-ray photoelectron spectroscopy (XPS). Zn 2p peaks shift by about 0.25 eV towards higher binding energy in the zinc-tellurite glasses in comparison to its value in ZnO powder, while the Te 3p, Te 3d, and O 1s core levels for the glasses remain essentially unchanged from those of TeO2 powder. Each O 1s spectrum is deconvoluted into two peaks, in which the higher energy one is due to oxygen atoms in the hydroxides covering the sample surface. Although both bridging oxygen (BO) and non-bridging oxygen (NBO) atoms should certainly exist in these tellurite glasses, the electrons are delocalised in the NBO-Te-BO bonds which equalize the electronic density of the valence shell between BO and NBO atoms and make it difficult to distinguish.

KW - Bridging oxygen

KW - Non-bridging oxygen

KW - XPS, Oxide glasses

UR - http://www.scopus.com/inward/record.url?scp=0036533373&partnerID=8YFLogxK

U2 - 10.1016/S0368-2048(01)00371-1

DO - 10.1016/S0368-2048(01)00371-1

M3 - Article

AN - SCOPUS:0036533373

SN - 0368-2048

VL - 123

SP - 47

EP - 55

JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

IS - 1

ER -

X-ray photoelectron spectroscopic studies of zinc-tellurite glasses

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this