Journal of Inorganic Materials

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Electronic Structure and Absorption Spectrum of Rutil TiO2 Crystal with F and F+ Centers

CHEN Jun; LIN Li-Bin; LU Tie-Cheng   

  1. Institute of Nuclear Science and Technology; Radiation Physics and Radiation Technology Lab Sichuan UniveTSity Chengdu 610064 China
  • Received:1998-08-13 Revised:1998-09-14 Published:1999-06-20 Online:1999-06-20

Abstract: The electronic structure of rutile TiO2 crystal with F and F+ center was studied using the SCC-DVM-Xα method , and their optical transition models were obtained. We found that F and F+ center optical transition energies are 0.98eV and 1.78eV respectively, that the optical absorption peaks of 1.2μm(1.02eV), 740um(1.75eV) in the reduced sample of TiO2 are due to F and F+ center formed, and a transfer of F+ →F existed.

Key words: F, F+ center, energy level, transition energy

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