X-ray photoelectron spectroscopic studies of zinc-tellurite glasses
作者： G.D. Khattak , M.A. Salim
DOI: 10.1016/S0368-2048(01)00371-1
关键词: Crystallography 、 Natural bond orbital 、 Zinc 、 Oxygen 、 Inorganic chemistry 、 Valence electron 、 Chemical composition 、 Materials science 、 X-ray photoelectron spectroscopy 、 Binding energy 、 Electronic density
摘要: Zinc–tellurite glasses with chemical composition [(ZnO)x(TeO2)100−x], where x=25, 30 and 35 have been prepared investigated by X-ray photoelectron spectroscopy (XPS). Zn 2p peaks shift about 0.25 eV towards higher binding energy in the zinc–tellurite comparison to its value ZnO powder, while Te 3p, 3d, O 1s core levels for remain essentially unchanged from those of TeO2 powder. Each spectrum is deconvoluted into two peaks, which one due oxygen atoms hydroxides covering sample surface. Although both bridging (BO) non-bridging (NBO) should certainly exist these tellurite glasses, electrons are delocalised NBO–Te–BO bonds equalize electronic density valence shell between BO NBO make it difficult distinguish.
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