Electronic properties of cubic TaCxN1−x: A comparative study using self-consistent cluster and ab initio band-structure calculations and X-ray spectroscopy

Mechanism of light emission and electronic properties of a Eu3+-doped Bi2SrTa2O9 system determined by coupled X-ray absorption and emission spectroscopy

“…These changes are caused by the hybridization of additional Eu 4f5d-O 2p states. 27 In the high-energy region, no significant change in the energy of peaks C 2 -F 2 was observed upon doping, suggesting that these features largely correspond to the intrinsic electronic states in BSTO. However, the intensities of these features varied with the Eu doping level, owing to modification of the conduction band intermixing in higher-energy states.…”

“…Consequently, for undoped BSTO, the main contributions of B 2 to the absorption edge from 0-5 eV above the threshold correspond to the O 2p state that is hybridized with Sr 4d and Ta 5d intermixing. 25,27 The indistinct but visible feature A 2 in the lower part of the conduction band is caused by hybridization of Bi 6p states with holes in the O 2p band. 28 The spectral features that are marked C 2 , D 2 , E 2 , and F 2 are at 535, 537.4, 540 and 543.2 eV, respectively.…”

“…These features provide information on the local density of unoccupied O 2p states that are hybridized with Sr 5sp and Ta 6sp intermixing. 25,27 Following this analysis of the spectral profile of BSTO, the effects of doping that arise from the substitution of Sr by Eu are now investigated. Upon doping, two major variations occur in the pre-peak region.…”

In-composition effect on band gap width of Sc1−xInxN alloys

“…They found that the substitution of carbon atoms by nitrogen atoms in the TaC x N 1−x alloys does not lead to changes of the shapes of the C-K˛and N-Kb ands as well as energy positions of their main maxima with respect to Fermi level [17].…”