3, XPS analysis results showed that compared with BiOIO3 nanosheets without nickel ions, the peak area corresponding to the Bi-O bond decreased after doping, while the peak area corresponding to the oxygen vacancy increased, which indicated that nickel ion doping caused some Bi-O bond fractures...
In the studied compounds, the anion vacancy systematically increases with increasing vanadium, thereby enhancing conductivity. However, the stronger V–O bond in VO4 tetrahedra may hinder the migration of O2− ions. These competing effects might be the reason for lower enhancement in conductivity ...
Since the Zn atoms are mostly located in the ZnO1x matrix, the (002) peak shift in the XRD of the vacuum- and oxygen-annealed films is attributed to the variation of the oxygen vacancy concentration, suggesting that the oxygen vacancies in the ZnO thin films are responsible for the ...
Furthermore, the molecular orbital in the valence band, which has a large contribution from oxygen atoms near the vacancy, shifts by 0.08 eV45 due to the lack of oxygen. This situation is shown schematically in Figure 9a. Base on the discussion above, the vacancies related to the prepar- ...
(2),Hais the energy flipping between the upward dipole and downward one in the presence of an oxygen vacancy,Hbis the energy term from the couplings of this distorted cage with the neighboring dipoles,φis the electrical potential, andqris the charge concentration,f(z)is the distribution ...
XPSDefectThis paper reports oxygen vacancy mediated defect mechanism responsible for exhibiting unusually high dielectric constant anomaly observed around room temperature in polycrystalline GdMnO(GMO). Bulk ceramics of GMO are prepared by solid state reaction technique using slow step sintering schedule. ...
7b), which indicated the considerable oxidation of Ir during the OER not attributable to hole-doped states induced by surrounding vacancy formation (Fig. 7d)51. Conversely, Ru–O bond length exhibited a different behavior, being considerably larger at +1.45 VRHE (2.025 Å) than at +1.2...
The initial oxidation stage shows a significant reduction in the vacancy dangling bond surface states and the appearance of the characteristic peak at 5.6 eV previously observed in UPS experiments. 展开 DOI: 10.1088/0022-3719/13/22/018 被引量: 30 ...
To further recognize the effect of OVs on the energy band structure, the band structures of BiOCl with oxygen vacancy were calculated by HSE06 functional on the basis of the density functional theory (see Fig. 6). In the present work, the model of BiOCl with OVs was constructed by removing...
The XPS spectrum of O 1 s deconvoluted into three peaks representing lattice oxygen (OL), vacancy oxygen (OV), and chemisorbed oxygen (OC), with corresponding binding energy peaks at 533.5 eV, 532.0 eV, and 530.1 eV, respectively (Fig. 5e, Table S3). The peak areas of the...