2019
DOI: 10.1016/j.physb.2018.11.064
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Vacancies inducing electronic and optical properties in 2D ZnO:Be/Mg

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Cited by 6 publications
(6 citation statements)
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“…For oxygen vacancy, the VBM and CBM moved to a lower energy region, the presence of V O resulted in the splitting of the VB into two narrower bandgaps (−2 eV and 0 eV), as shown in Figure 5d. The upper energy level was located in the forbidden band, which is induced by oxygen vacancy [31]. The new energy level is beneficial to the transition of electrons under low-energy incident light.…”
Section: Crystal Structure and Structural Stabilitymentioning
confidence: 95%
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“…For oxygen vacancy, the VBM and CBM moved to a lower energy region, the presence of V O resulted in the splitting of the VB into two narrower bandgaps (−2 eV and 0 eV), as shown in Figure 5d. The upper energy level was located in the forbidden band, which is induced by oxygen vacancy [31]. The new energy level is beneficial to the transition of electrons under low-energy incident light.…”
Section: Crystal Structure and Structural Stabilitymentioning
confidence: 95%
“…Wang et al [29] prepared pristine ZnO films, and found that the introduction of the green luminescence is correlated with the formation of the Zn vacancy-related defect (V Zn ). Theoretical studies of the effect of vacancy defects in metal element-doped ZnO were performed in [31][32][33][34][35][36]. Bai et al [31] studied the electronic and optical properties of 2D ZnO:Mg/Be with V O or V Zn .…”
Section: Introductionmentioning
confidence: 99%
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“…On the other hand, nitrogen vacancies induce an upper and lower spin band asymmetry and bring in a total magnetic moment of 1.0 μ B ; they result in a shift of the Fermi level toward the conduction band, transforming the system from an 3.4 eV insulator into an n-type semiconductor . Similar modifications to the bandgap and the emergence of defect states have also been observed, for instance, in 2D zinc oxide, phosphorene, and MoSe 2 …”
mentioning
confidence: 71%
“…Graphitic zinc oxide (gZnO) belongs to rare breed of planar thermally stable two-dimensional materials that cover the energy spectrum in between hBN and narrow band gap 2D semiconductors like transition metal dichalcogenides (TMDs). However, taming the necessary evil of wide band gap in 2D semiconductors like gZnO to harness ultraviolet and visible light is a different challenge altogether. There are no experimental reports that show photoexcitation of gZnO at visible wavelengths despite theoretical studies predicting amenability of gZnO to band gap engineering via routes such as doping and structural modifications. …”
mentioning
confidence: 99%