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- W2313532919 endingPage "19947" @default.
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- W2313532919 abstract "The formation energies of cation antisite defects (YAl and AlY), oxygen vacancies (VO), and nearest-neighbor defect complexes (YAl–AlY and YAl–VO) in various charge states in the YAlO3 crystal are calculated using density functional theory (DFT) with a modified PBE0 hybrid functional containing 32% Hartree–Fock (HF) exchange. It is found that the formation of YAl is more energetically favorable than AlY under oxygen-poor condition, consistent with the fact that the latter was not observed in experiments. On the basis of calculated optical transition energies associated with the excitons trapped at YAl, VO, and YAl–VO, the two emission bands observed under excitonic excitation at low temperature are identified. Electronic properties of YAl–VO complexes in the neutral and singly negative charge states are finally investigated. It shows that the extra electron added into the negative charge state is mainly localized at 4d orbitals of YAl with a two-component feature of its density distribution extending axially along the YAl–VO direction." @default.
- W2313532919 created "2016-06-24" @default.
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- W2313532919 date "2014-08-19" @default.
- W2313532919 modified "2023-10-13" @default.
- W2313532919 title "Energetic, Optical, and Electronic Properties of Intrinsic Electron-Trapping Defects in YAlO<sub>3</sub>: A Hybrid DFT Study" @default.
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- W2313532919 doi "https://doi.org/10.1021/jp5050404" @default.
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