Soft x-ray absorption spectroscopy on Co doped ZnO: structural distortions and electronic structure

16th International Conference on X-ray Absorption Fine Structure

Kowalik, I.A.^1 ; Guziewicz, E.^1 ; Godlewski, M.^1 ; Arvanitis, D.^2

Inst. of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, Warsaw

02-668, Poland^1

Department of Physics and Astronomy, Uppsala University, Box 516, Uppsala

75120, Sweden^2

关键词: Co-doped ZnO;    Host lattice;    Local environments;    Model calculations;    Soft x-ray absorption spectroscopies;    Soft-X-ray absorption;    Structural distortions;    Systematic variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/712/1/012104/pdf
DOI  :  10.1088/1742-6596/712/1/012104

来源: IOP

【 摘 要 】

We present soft x-ray absorption spectra from a series of Co doped ZnO films. We discuss systematic variations of the Co L-edge white line intensity and multiplet features for this series of samples. We document sizeable differences in the electronic state of the Co ionic cores, as well as in the local environment of the host lattice atoms, characterised by means of x-ray absorption spectra at the O K-edge and Zn L-edges. Model calculations allow to correlate the observed effects to small structural distortions of the ZnO lattice.